2 * BSS client mode implementation
3 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 * order BSS list by RSSI(?) ("quality of AP")
16 * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
19 #include <linux/delay.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/if_arp.h>
24 #include <linux/wireless.h>
25 #include <linux/random.h>
26 #include <linux/etherdevice.h>
27 #include <net/iw_handler.h>
28 #include <asm/types.h>
30 #include <net/mac80211.h>
31 #include "ieee80211_i.h"
32 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
35 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
36 #define IEEE80211_AUTH_MAX_TRIES 3
37 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
38 #define IEEE80211_ASSOC_MAX_TRIES 3
39 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
40 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
41 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
42 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
43 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
44 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
46 #define IEEE80211_PROBE_DELAY (HZ / 33)
47 #define IEEE80211_CHANNEL_TIME (HZ / 33)
48 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
49 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
50 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
51 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
53 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
56 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
58 #define ERP_INFO_USE_PROTECTION BIT(1)
60 /* mgmt header + 1 byte action code */
61 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
63 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
64 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
65 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
67 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
68 u8
*ssid
, size_t ssid_len
);
69 static struct ieee80211_sta_bss
*
70 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int channel
,
71 u8
*ssid
, u8 ssid_len
);
72 static void ieee80211_rx_bss_put(struct net_device
*dev
,
73 struct ieee80211_sta_bss
*bss
);
74 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
75 struct ieee80211_if_sta
*ifsta
);
76 static int ieee80211_sta_wep_configured(struct net_device
*dev
);
77 static int ieee80211_sta_start_scan(struct net_device
*dev
,
78 u8
*ssid
, size_t ssid_len
);
79 static int ieee80211_sta_config_auth(struct net_device
*dev
,
80 struct ieee80211_if_sta
*ifsta
);
83 /* Parsed Information Elements */
84 struct ieee802_11_elems
{
102 /* length of them, respectively */
114 u8 ext_supp_rates_len
;
121 static void ieee802_11_parse_elems(u8
*start
, size_t len
,
122 struct ieee802_11_elems
*elems
)
127 memset(elems
, 0, sizeof(*elems
));
142 elems
->ssid_len
= elen
;
144 case WLAN_EID_SUPP_RATES
:
145 elems
->supp_rates
= pos
;
146 elems
->supp_rates_len
= elen
;
148 case WLAN_EID_FH_PARAMS
:
149 elems
->fh_params
= pos
;
150 elems
->fh_params_len
= elen
;
152 case WLAN_EID_DS_PARAMS
:
153 elems
->ds_params
= pos
;
154 elems
->ds_params_len
= elen
;
156 case WLAN_EID_CF_PARAMS
:
157 elems
->cf_params
= pos
;
158 elems
->cf_params_len
= elen
;
162 elems
->tim_len
= elen
;
164 case WLAN_EID_IBSS_PARAMS
:
165 elems
->ibss_params
= pos
;
166 elems
->ibss_params_len
= elen
;
168 case WLAN_EID_CHALLENGE
:
169 elems
->challenge
= pos
;
170 elems
->challenge_len
= elen
;
173 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
175 /* Microsoft OUI (00:50:F2) */
177 /* OUI Type 1 - WPA IE */
179 elems
->wpa_len
= elen
;
180 } else if (elen
>= 5 && pos
[3] == 2) {
182 elems
->wmm_info
= pos
;
183 elems
->wmm_info_len
= elen
;
184 } else if (pos
[4] == 1) {
185 elems
->wmm_param
= pos
;
186 elems
->wmm_param_len
= elen
;
193 elems
->rsn_len
= elen
;
195 case WLAN_EID_ERP_INFO
:
196 elems
->erp_info
= pos
;
197 elems
->erp_info_len
= elen
;
199 case WLAN_EID_EXT_SUPP_RATES
:
200 elems
->ext_supp_rates
= pos
;
201 elems
->ext_supp_rates_len
= elen
;
203 case WLAN_EID_HT_CAPABILITY
:
204 elems
->ht_cap_elem
= pos
;
205 elems
->ht_cap_elem_len
= elen
;
207 case WLAN_EID_HT_EXTRA_INFO
:
208 elems
->ht_info_elem
= pos
;
209 elems
->ht_info_elem_len
= elen
;
221 static int ecw2cw(int ecw
)
231 static void ieee80211_sta_wmm_params(struct net_device
*dev
,
232 struct ieee80211_if_sta
*ifsta
,
233 u8
*wmm_param
, size_t wmm_param_len
)
235 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
236 struct ieee80211_tx_queue_params params
;
241 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
243 count
= wmm_param
[6] & 0x0f;
244 if (count
== ifsta
->wmm_last_param_set
)
246 ifsta
->wmm_last_param_set
= count
;
249 left
= wmm_param_len
- 8;
251 memset(¶ms
, 0, sizeof(params
));
253 if (!local
->ops
->conf_tx
)
257 for (; left
>= 4; left
-= 4, pos
+= 4) {
258 int aci
= (pos
[0] >> 5) & 0x03;
259 int acm
= (pos
[0] >> 4) & 0x01;
264 queue
= IEEE80211_TX_QUEUE_DATA3
;
266 local
->wmm_acm
|= BIT(0) | BIT(3);
270 queue
= IEEE80211_TX_QUEUE_DATA1
;
272 local
->wmm_acm
|= BIT(4) | BIT(5);
276 queue
= IEEE80211_TX_QUEUE_DATA0
;
278 local
->wmm_acm
|= BIT(6) | BIT(7);
283 queue
= IEEE80211_TX_QUEUE_DATA2
;
285 local
->wmm_acm
|= BIT(1) | BIT(2);
290 params
.aifs
= pos
[0] & 0x0f;
291 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
292 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
293 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
294 params
.burst_time
= (pos
[2] | (pos
[3] << 8)) * 32 / 100;
295 printk(KERN_DEBUG
"%s: WMM queue=%d aci=%d acm=%d aifs=%d "
296 "cWmin=%d cWmax=%d burst=%d\n",
297 dev
->name
, queue
, aci
, acm
, params
.aifs
, params
.cw_min
,
298 params
.cw_max
, params
.burst_time
);
299 /* TODO: handle ACM (block TX, fallback to next lowest allowed
301 if (local
->ops
->conf_tx(local_to_hw(local
), queue
, ¶ms
)) {
302 printk(KERN_DEBUG
"%s: failed to set TX queue "
303 "parameters for queue %d\n", dev
->name
, queue
);
309 static void ieee80211_handle_erp_ie(struct net_device
*dev
, u8 erp_value
)
311 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
312 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
313 int use_protection
= (erp_value
& WLAN_ERP_USE_PROTECTION
) != 0;
314 int preamble_mode
= (erp_value
& WLAN_ERP_BARKER_PREAMBLE
) != 0;
316 DECLARE_MAC_BUF(mac
);
318 if (use_protection
!= !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
)) {
319 if (net_ratelimit()) {
320 printk(KERN_DEBUG
"%s: CTS protection %s (BSSID="
323 use_protection
? "enabled" : "disabled",
324 print_mac(mac
, ifsta
->bssid
));
327 sdata
->flags
|= IEEE80211_SDATA_USE_PROTECTION
;
329 sdata
->flags
&= ~IEEE80211_SDATA_USE_PROTECTION
;
330 changes
|= IEEE80211_ERP_CHANGE_PROTECTION
;
333 if (preamble_mode
!= !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
)) {
334 if (net_ratelimit()) {
335 printk(KERN_DEBUG
"%s: switched to %s barker preamble"
338 (preamble_mode
== WLAN_ERP_PREAMBLE_SHORT
) ?
340 print_mac(mac
, ifsta
->bssid
));
343 sdata
->flags
&= ~IEEE80211_SDATA_SHORT_PREAMBLE
;
345 sdata
->flags
|= IEEE80211_SDATA_SHORT_PREAMBLE
;
346 changes
|= IEEE80211_ERP_CHANGE_PREAMBLE
;
350 ieee80211_erp_info_change_notify(dev
, changes
);
353 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
354 struct ieee80211_ht_info
*ht_info
)
360 memset(ht_info
, 0, sizeof(*ht_info
));
363 u8 ampdu_info
= ht_cap_ie
->ampdu_params_info
;
365 ht_info
->ht_supported
= 1;
366 ht_info
->cap
= le16_to_cpu(ht_cap_ie
->cap_info
);
367 ht_info
->ampdu_factor
=
368 ampdu_info
& IEEE80211_HT_CAP_AMPDU_FACTOR
;
369 ht_info
->ampdu_density
=
370 (ampdu_info
& IEEE80211_HT_CAP_AMPDU_DENSITY
) >> 2;
371 memcpy(ht_info
->supp_mcs_set
, ht_cap_ie
->supp_mcs_set
, 16);
373 ht_info
->ht_supported
= 0;
378 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
379 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
380 struct ieee80211_ht_bss_info
*bss_info
)
382 if (bss_info
== NULL
)
385 memset(bss_info
, 0, sizeof(*bss_info
));
387 if (ht_add_info_ie
) {
389 op_mode
= le16_to_cpu(ht_add_info_ie
->operation_mode
);
391 bss_info
->primary_channel
= ht_add_info_ie
->control_chan
;
392 bss_info
->bss_cap
= ht_add_info_ie
->ht_param
;
393 bss_info
->bss_op_mode
= (u8
)(op_mode
& 0xff);
399 static void ieee80211_sta_send_associnfo(struct net_device
*dev
,
400 struct ieee80211_if_sta
*ifsta
)
405 union iwreq_data wrqu
;
407 if (!ifsta
->assocreq_ies
&& !ifsta
->assocresp_ies
)
410 buf
= kmalloc(50 + 2 * (ifsta
->assocreq_ies_len
+
411 ifsta
->assocresp_ies_len
), GFP_KERNEL
);
415 len
= sprintf(buf
, "ASSOCINFO(");
416 if (ifsta
->assocreq_ies
) {
417 len
+= sprintf(buf
+ len
, "ReqIEs=");
418 for (i
= 0; i
< ifsta
->assocreq_ies_len
; i
++) {
419 len
+= sprintf(buf
+ len
, "%02x",
420 ifsta
->assocreq_ies
[i
]);
423 if (ifsta
->assocresp_ies
) {
424 if (ifsta
->assocreq_ies
)
425 len
+= sprintf(buf
+ len
, " ");
426 len
+= sprintf(buf
+ len
, "RespIEs=");
427 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
428 len
+= sprintf(buf
+ len
, "%02x",
429 ifsta
->assocresp_ies
[i
]);
432 len
+= sprintf(buf
+ len
, ")");
434 if (len
> IW_CUSTOM_MAX
) {
435 len
= sprintf(buf
, "ASSOCRESPIE=");
436 for (i
= 0; i
< ifsta
->assocresp_ies_len
; i
++) {
437 len
+= sprintf(buf
+ len
, "%02x",
438 ifsta
->assocresp_ies
[i
]);
442 memset(&wrqu
, 0, sizeof(wrqu
));
443 wrqu
.data
.length
= len
;
444 wireless_send_event(dev
, IWEVCUSTOM
, &wrqu
, buf
);
450 static void ieee80211_set_associated(struct net_device
*dev
,
451 struct ieee80211_if_sta
*ifsta
,
454 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
455 union iwreq_data wrqu
;
457 if (!!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) == assoc
)
461 struct ieee80211_sub_if_data
*sdata
;
462 struct ieee80211_sta_bss
*bss
;
464 ifsta
->flags
|= IEEE80211_STA_ASSOCIATED
;
466 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
467 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
470 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
471 local
->hw
.conf
.channel
,
472 ifsta
->ssid
, ifsta
->ssid_len
);
474 if (bss
->has_erp_value
)
475 ieee80211_handle_erp_ie(dev
, bss
->erp_value
);
476 ieee80211_rx_bss_put(dev
, bss
);
479 netif_carrier_on(dev
);
480 ifsta
->flags
|= IEEE80211_STA_PREV_BSSID_SET
;
481 memcpy(ifsta
->prev_bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
482 memcpy(wrqu
.ap_addr
.sa_data
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
483 ieee80211_sta_send_associnfo(dev
, ifsta
);
485 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
487 netif_carrier_off(dev
);
488 ieee80211_reset_erp_info(dev
);
489 memset(wrqu
.ap_addr
.sa_data
, 0, ETH_ALEN
);
491 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
492 wireless_send_event(dev
, SIOCGIWAP
, &wrqu
, NULL
);
493 ifsta
->last_probe
= jiffies
;
494 ieee80211_led_assoc(local
, assoc
);
497 static void ieee80211_set_disassoc(struct net_device
*dev
,
498 struct ieee80211_if_sta
*ifsta
, int deauth
)
501 ifsta
->auth_tries
= 0;
502 ifsta
->assoc_tries
= 0;
503 ieee80211_set_associated(dev
, ifsta
, 0);
506 static void ieee80211_sta_tx(struct net_device
*dev
, struct sk_buff
*skb
,
509 struct ieee80211_sub_if_data
*sdata
;
510 struct ieee80211_tx_packet_data
*pkt_data
;
512 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
513 skb
->dev
= sdata
->local
->mdev
;
514 skb_set_mac_header(skb
, 0);
515 skb_set_network_header(skb
, 0);
516 skb_set_transport_header(skb
, 0);
518 pkt_data
= (struct ieee80211_tx_packet_data
*) skb
->cb
;
519 memset(pkt_data
, 0, sizeof(struct ieee80211_tx_packet_data
));
520 pkt_data
->ifindex
= sdata
->dev
->ifindex
;
522 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
528 static void ieee80211_send_auth(struct net_device
*dev
,
529 struct ieee80211_if_sta
*ifsta
,
530 int transaction
, u8
*extra
, size_t extra_len
,
533 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
535 struct ieee80211_mgmt
*mgmt
;
537 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
538 sizeof(*mgmt
) + 6 + extra_len
);
540 printk(KERN_DEBUG
"%s: failed to allocate buffer for auth "
541 "frame\n", dev
->name
);
544 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
546 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
547 memset(mgmt
, 0, 24 + 6);
548 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
549 IEEE80211_STYPE_AUTH
);
551 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
552 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
553 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
554 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
555 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(ifsta
->auth_alg
);
556 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
557 ifsta
->auth_transaction
= transaction
+ 1;
558 mgmt
->u
.auth
.status_code
= cpu_to_le16(0);
560 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
562 ieee80211_sta_tx(dev
, skb
, encrypt
);
566 static void ieee80211_authenticate(struct net_device
*dev
,
567 struct ieee80211_if_sta
*ifsta
)
569 DECLARE_MAC_BUF(mac
);
572 if (ifsta
->auth_tries
> IEEE80211_AUTH_MAX_TRIES
) {
573 printk(KERN_DEBUG
"%s: authentication with AP %s"
575 dev
->name
, print_mac(mac
, ifsta
->bssid
));
576 ifsta
->state
= IEEE80211_DISABLED
;
580 ifsta
->state
= IEEE80211_AUTHENTICATE
;
581 printk(KERN_DEBUG
"%s: authenticate with AP %s\n",
582 dev
->name
, print_mac(mac
, ifsta
->bssid
));
584 ieee80211_send_auth(dev
, ifsta
, 1, NULL
, 0, 0);
586 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_AUTH_TIMEOUT
);
590 static void ieee80211_send_assoc(struct net_device
*dev
,
591 struct ieee80211_if_sta
*ifsta
)
593 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
594 struct ieee80211_hw_mode
*mode
;
596 struct ieee80211_mgmt
*mgmt
;
600 struct ieee80211_sta_bss
*bss
;
603 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
604 sizeof(*mgmt
) + 200 + ifsta
->extra_ie_len
+
607 printk(KERN_DEBUG
"%s: failed to allocate buffer for assoc "
608 "frame\n", dev
->name
);
611 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
613 mode
= local
->oper_hw_mode
;
614 capab
= ifsta
->capab
;
615 if (mode
->mode
== MODE_IEEE80211G
) {
616 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
|
617 WLAN_CAPABILITY_SHORT_PREAMBLE
;
619 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
620 ifsta
->ssid
, ifsta
->ssid_len
);
622 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
623 capab
|= WLAN_CAPABILITY_PRIVACY
;
627 ieee80211_rx_bss_put(dev
, bss
);
630 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
632 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
633 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
634 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
636 if (ifsta
->flags
& IEEE80211_STA_PREV_BSSID_SET
) {
638 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
639 IEEE80211_STYPE_REASSOC_REQ
);
640 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
641 mgmt
->u
.reassoc_req
.listen_interval
= cpu_to_le16(1);
642 memcpy(mgmt
->u
.reassoc_req
.current_ap
, ifsta
->prev_bssid
,
646 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
647 IEEE80211_STYPE_ASSOC_REQ
);
648 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
649 mgmt
->u
.assoc_req
.listen_interval
= cpu_to_le16(1);
653 ies
= pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
654 *pos
++ = WLAN_EID_SSID
;
655 *pos
++ = ifsta
->ssid_len
;
656 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
658 len
= mode
->num_rates
;
661 pos
= skb_put(skb
, len
+ 2);
662 *pos
++ = WLAN_EID_SUPP_RATES
;
664 for (i
= 0; i
< len
; i
++) {
665 int rate
= mode
->rates
[i
].rate
;
666 *pos
++ = (u8
) (rate
/ 5);
669 if (mode
->num_rates
> len
) {
670 pos
= skb_put(skb
, mode
->num_rates
- len
+ 2);
671 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
672 *pos
++ = mode
->num_rates
- len
;
673 for (i
= len
; i
< mode
->num_rates
; i
++) {
674 int rate
= mode
->rates
[i
].rate
;
675 *pos
++ = (u8
) (rate
/ 5);
679 if (ifsta
->extra_ie
) {
680 pos
= skb_put(skb
, ifsta
->extra_ie_len
);
681 memcpy(pos
, ifsta
->extra_ie
, ifsta
->extra_ie_len
);
684 if (wmm
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
685 pos
= skb_put(skb
, 9);
686 *pos
++ = WLAN_EID_VENDOR_SPECIFIC
;
687 *pos
++ = 7; /* len */
688 *pos
++ = 0x00; /* Microsoft OUI 00:50:F2 */
691 *pos
++ = 2; /* WME */
692 *pos
++ = 0; /* WME info */
693 *pos
++ = 1; /* WME ver */
696 /* wmm support is a must to HT */
697 if (wmm
&& mode
->ht_info
.ht_supported
) {
698 __le16 tmp
= cpu_to_le16(mode
->ht_info
.cap
);
699 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
)+2);
700 *pos
++ = WLAN_EID_HT_CAPABILITY
;
701 *pos
++ = sizeof(struct ieee80211_ht_cap
);
702 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
703 memcpy(pos
, &tmp
, sizeof(u16
));
705 *pos
++ = (mode
->ht_info
.ampdu_factor
|
706 (mode
->ht_info
.ampdu_density
<< 2));
707 memcpy(pos
, mode
->ht_info
.supp_mcs_set
, 16);
710 kfree(ifsta
->assocreq_ies
);
711 ifsta
->assocreq_ies_len
= (skb
->data
+ skb
->len
) - ies
;
712 ifsta
->assocreq_ies
= kmalloc(ifsta
->assocreq_ies_len
, GFP_KERNEL
);
713 if (ifsta
->assocreq_ies
)
714 memcpy(ifsta
->assocreq_ies
, ies
, ifsta
->assocreq_ies_len
);
716 ieee80211_sta_tx(dev
, skb
, 0);
720 static void ieee80211_send_deauth(struct net_device
*dev
,
721 struct ieee80211_if_sta
*ifsta
, u16 reason
)
723 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
725 struct ieee80211_mgmt
*mgmt
;
727 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
729 printk(KERN_DEBUG
"%s: failed to allocate buffer for deauth "
730 "frame\n", dev
->name
);
733 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
735 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
737 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
738 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
739 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
740 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
741 IEEE80211_STYPE_DEAUTH
);
743 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
745 ieee80211_sta_tx(dev
, skb
, 0);
749 static void ieee80211_send_disassoc(struct net_device
*dev
,
750 struct ieee80211_if_sta
*ifsta
, u16 reason
)
752 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
754 struct ieee80211_mgmt
*mgmt
;
756 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
));
758 printk(KERN_DEBUG
"%s: failed to allocate buffer for disassoc "
759 "frame\n", dev
->name
);
762 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
764 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
766 memcpy(mgmt
->da
, ifsta
->bssid
, ETH_ALEN
);
767 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
768 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
769 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
770 IEEE80211_STYPE_DISASSOC
);
772 mgmt
->u
.disassoc
.reason_code
= cpu_to_le16(reason
);
774 ieee80211_sta_tx(dev
, skb
, 0);
778 static int ieee80211_privacy_mismatch(struct net_device
*dev
,
779 struct ieee80211_if_sta
*ifsta
)
781 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
782 struct ieee80211_sta_bss
*bss
;
787 if (!ifsta
|| (ifsta
->flags
& IEEE80211_STA_MIXED_CELL
))
790 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
, local
->hw
.conf
.channel
,
791 ifsta
->ssid
, ifsta
->ssid_len
);
795 bss_privacy
= !!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
);
796 wep_privacy
= !!ieee80211_sta_wep_configured(dev
);
797 privacy_invoked
= !!(ifsta
->flags
& IEEE80211_STA_PRIVACY_INVOKED
);
799 ieee80211_rx_bss_put(dev
, bss
);
801 if ((bss_privacy
== wep_privacy
) || (bss_privacy
== privacy_invoked
))
808 static void ieee80211_associate(struct net_device
*dev
,
809 struct ieee80211_if_sta
*ifsta
)
811 DECLARE_MAC_BUF(mac
);
813 ifsta
->assoc_tries
++;
814 if (ifsta
->assoc_tries
> IEEE80211_ASSOC_MAX_TRIES
) {
815 printk(KERN_DEBUG
"%s: association with AP %s"
817 dev
->name
, print_mac(mac
, ifsta
->bssid
));
818 ifsta
->state
= IEEE80211_DISABLED
;
822 ifsta
->state
= IEEE80211_ASSOCIATE
;
823 printk(KERN_DEBUG
"%s: associate with AP %s\n",
824 dev
->name
, print_mac(mac
, ifsta
->bssid
));
825 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
826 printk(KERN_DEBUG
"%s: mismatch in privacy configuration and "
827 "mixed-cell disabled - abort association\n", dev
->name
);
828 ifsta
->state
= IEEE80211_DISABLED
;
832 ieee80211_send_assoc(dev
, ifsta
);
834 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_ASSOC_TIMEOUT
);
838 static void ieee80211_associated(struct net_device
*dev
,
839 struct ieee80211_if_sta
*ifsta
)
841 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
842 struct sta_info
*sta
;
844 DECLARE_MAC_BUF(mac
);
846 /* TODO: start monitoring current AP signal quality and number of
847 * missed beacons. Scan other channels every now and then and search
849 /* TODO: remove expired BSSes */
851 ifsta
->state
= IEEE80211_ASSOCIATED
;
853 sta
= sta_info_get(local
, ifsta
->bssid
);
855 printk(KERN_DEBUG
"%s: No STA entry for own AP %s\n",
856 dev
->name
, print_mac(mac
, ifsta
->bssid
));
860 if (time_after(jiffies
,
861 sta
->last_rx
+ IEEE80211_MONITORING_INTERVAL
)) {
862 if (ifsta
->flags
& IEEE80211_STA_PROBEREQ_POLL
) {
863 printk(KERN_DEBUG
"%s: No ProbeResp from "
864 "current AP %s - assume out of "
866 dev
->name
, print_mac(mac
, ifsta
->bssid
));
870 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
872 local
->scan_ssid_len
);
873 ifsta
->flags
^= IEEE80211_STA_PROBEREQ_POLL
;
875 ifsta
->flags
&= ~IEEE80211_STA_PROBEREQ_POLL
;
876 if (time_after(jiffies
, ifsta
->last_probe
+
877 IEEE80211_PROBE_INTERVAL
)) {
878 ifsta
->last_probe
= jiffies
;
879 ieee80211_send_probe_req(dev
, ifsta
->bssid
,
887 ifsta
->state
= IEEE80211_DISABLED
;
888 ieee80211_set_associated(dev
, ifsta
, 0);
890 mod_timer(&ifsta
->timer
, jiffies
+
891 IEEE80211_MONITORING_INTERVAL
);
896 static void ieee80211_send_probe_req(struct net_device
*dev
, u8
*dst
,
897 u8
*ssid
, size_t ssid_len
)
899 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
900 struct ieee80211_hw_mode
*mode
;
902 struct ieee80211_mgmt
*mgmt
;
903 u8
*pos
, *supp_rates
, *esupp_rates
= NULL
;
906 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ sizeof(*mgmt
) + 200);
908 printk(KERN_DEBUG
"%s: failed to allocate buffer for probe "
909 "request\n", dev
->name
);
912 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
914 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
916 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
917 IEEE80211_STYPE_PROBE_REQ
);
918 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
920 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
921 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
923 memset(mgmt
->da
, 0xff, ETH_ALEN
);
924 memset(mgmt
->bssid
, 0xff, ETH_ALEN
);
926 pos
= skb_put(skb
, 2 + ssid_len
);
927 *pos
++ = WLAN_EID_SSID
;
929 memcpy(pos
, ssid
, ssid_len
);
931 supp_rates
= skb_put(skb
, 2);
932 supp_rates
[0] = WLAN_EID_SUPP_RATES
;
934 mode
= local
->oper_hw_mode
;
935 for (i
= 0; i
< mode
->num_rates
; i
++) {
936 struct ieee80211_rate
*rate
= &mode
->rates
[i
];
937 if (!(rate
->flags
& IEEE80211_RATE_SUPPORTED
))
940 pos
= skb_put(skb
, 1);
942 } else if (supp_rates
[1] == 8) {
943 esupp_rates
= skb_put(skb
, 3);
944 esupp_rates
[0] = WLAN_EID_EXT_SUPP_RATES
;
946 pos
= &esupp_rates
[2];
948 pos
= skb_put(skb
, 1);
951 *pos
= rate
->rate
/ 5;
954 ieee80211_sta_tx(dev
, skb
, 0);
958 static int ieee80211_sta_wep_configured(struct net_device
*dev
)
960 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
961 if (!sdata
|| !sdata
->default_key
||
962 sdata
->default_key
->conf
.alg
!= ALG_WEP
)
968 static void ieee80211_auth_completed(struct net_device
*dev
,
969 struct ieee80211_if_sta
*ifsta
)
971 printk(KERN_DEBUG
"%s: authenticated\n", dev
->name
);
972 ifsta
->flags
|= IEEE80211_STA_AUTHENTICATED
;
973 ieee80211_associate(dev
, ifsta
);
977 static void ieee80211_auth_challenge(struct net_device
*dev
,
978 struct ieee80211_if_sta
*ifsta
,
979 struct ieee80211_mgmt
*mgmt
,
983 struct ieee802_11_elems elems
;
985 printk(KERN_DEBUG
"%s: replying to auth challenge\n", dev
->name
);
986 pos
= mgmt
->u
.auth
.variable
;
987 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
988 if (!elems
.challenge
) {
989 printk(KERN_DEBUG
"%s: no challenge IE in shared key auth "
990 "frame\n", dev
->name
);
993 ieee80211_send_auth(dev
, ifsta
, 3, elems
.challenge
- 2,
994 elems
.challenge_len
+ 2, 1);
997 static void ieee80211_send_addba_resp(struct net_device
*dev
, u8
*da
, u16 tid
,
998 u8 dialog_token
, u16 status
, u16 policy
,
999 u16 buf_size
, u16 timeout
)
1001 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1002 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
1003 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1004 struct sk_buff
*skb
;
1005 struct ieee80211_mgmt
*mgmt
;
1008 skb
= dev_alloc_skb(sizeof(*mgmt
) + local
->hw
.extra_tx_headroom
);
1010 printk(KERN_DEBUG
"%s: failed to allocate buffer "
1011 "for addba resp frame\n", dev
->name
);
1015 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1016 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
1017 memset(mgmt
, 0, 24);
1018 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1019 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
1020 if (sdata
->type
== IEEE80211_IF_TYPE_AP
)
1021 memcpy(mgmt
->bssid
, dev
->dev_addr
, ETH_ALEN
);
1023 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
1024 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
1025 IEEE80211_STYPE_ACTION
);
1027 skb_put(skb
, 1 + sizeof(mgmt
->u
.action
.u
.addba_resp
));
1028 mgmt
->u
.action
.category
= WLAN_CATEGORY_BACK
;
1029 mgmt
->u
.action
.u
.addba_resp
.action_code
= WLAN_ACTION_ADDBA_RESP
;
1030 mgmt
->u
.action
.u
.addba_resp
.dialog_token
= dialog_token
;
1032 capab
= (u16
)(policy
<< 1); /* bit 1 aggregation policy */
1033 capab
|= (u16
)(tid
<< 2); /* bit 5:2 TID number */
1034 capab
|= (u16
)(buf_size
<< 6); /* bit 15:6 max size of aggregation */
1036 mgmt
->u
.action
.u
.addba_resp
.capab
= cpu_to_le16(capab
);
1037 mgmt
->u
.action
.u
.addba_resp
.timeout
= cpu_to_le16(timeout
);
1038 mgmt
->u
.action
.u
.addba_resp
.status
= cpu_to_le16(status
);
1040 ieee80211_sta_tx(dev
, skb
, 0);
1045 static void ieee80211_sta_process_addba_request(struct net_device
*dev
,
1046 struct ieee80211_mgmt
*mgmt
,
1049 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1050 struct sta_info
*sta
;
1051 u16 capab
, tid
, timeout
, ba_policy
, buf_size
, status
;
1054 sta
= sta_info_get(local
, mgmt
->sa
);
1058 /* extract session parameters from addba request frame */
1059 dialog_token
= mgmt
->u
.action
.u
.addba_req
.dialog_token
;
1060 timeout
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.timeout
);
1062 capab
= le16_to_cpu(mgmt
->u
.action
.u
.addba_req
.capab
);
1063 ba_policy
= (capab
& IEEE80211_ADDBA_PARAM_POLICY_MASK
) >> 1;
1064 tid
= (capab
& IEEE80211_ADDBA_PARAM_TID_MASK
) >> 2;
1065 buf_size
= (capab
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
) >> 6;
1067 /* TODO - currently aggregation is declined (A-MPDU add BA request
1068 * acceptance is not obligatory by 802.11n draft), but here is
1069 * the entry point for dealing with it */
1070 #ifdef MAC80211_HT_DEBUG
1071 if (net_ratelimit())
1072 printk(KERN_DEBUG
"Add Block Ack request arrived,"
1073 " currently denying it\n");
1074 #endif /* MAC80211_HT_DEBUG */
1076 status
= WLAN_STATUS_REQUEST_DECLINED
;
1078 ieee80211_send_addba_resp(sta
->dev
, sta
->addr
, tid
, dialog_token
,
1079 status
, 1, buf_size
, timeout
);
1083 static void ieee80211_rx_mgmt_auth(struct net_device
*dev
,
1084 struct ieee80211_if_sta
*ifsta
,
1085 struct ieee80211_mgmt
*mgmt
,
1088 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1089 u16 auth_alg
, auth_transaction
, status_code
;
1090 DECLARE_MAC_BUF(mac
);
1092 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
1093 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
1094 printk(KERN_DEBUG
"%s: authentication frame received from "
1095 "%s, but not in authenticate state - ignored\n",
1096 dev
->name
, print_mac(mac
, mgmt
->sa
));
1101 printk(KERN_DEBUG
"%s: too short (%zd) authentication frame "
1102 "received from %s - ignored\n",
1103 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1107 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
1108 memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1109 printk(KERN_DEBUG
"%s: authentication frame received from "
1110 "unknown AP (SA=%s BSSID=%s) - "
1111 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1112 print_mac(mac
, mgmt
->bssid
));
1116 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
&&
1117 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0) {
1118 printk(KERN_DEBUG
"%s: authentication frame received from "
1119 "unknown BSSID (SA=%s BSSID=%s) - "
1120 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1121 print_mac(mac
, mgmt
->bssid
));
1125 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
1126 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
1127 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
1129 printk(KERN_DEBUG
"%s: RX authentication from %s (alg=%d "
1130 "transaction=%d status=%d)\n",
1131 dev
->name
, print_mac(mac
, mgmt
->sa
), auth_alg
,
1132 auth_transaction
, status_code
);
1134 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
1135 /* IEEE 802.11 standard does not require authentication in IBSS
1136 * networks and most implementations do not seem to use it.
1137 * However, try to reply to authentication attempts if someone
1138 * has actually implemented this.
1139 * TODO: Could implement shared key authentication. */
1140 if (auth_alg
!= WLAN_AUTH_OPEN
|| auth_transaction
!= 1) {
1141 printk(KERN_DEBUG
"%s: unexpected IBSS authentication "
1142 "frame (alg=%d transaction=%d)\n",
1143 dev
->name
, auth_alg
, auth_transaction
);
1146 ieee80211_send_auth(dev
, ifsta
, 2, NULL
, 0, 0);
1149 if (auth_alg
!= ifsta
->auth_alg
||
1150 auth_transaction
!= ifsta
->auth_transaction
) {
1151 printk(KERN_DEBUG
"%s: unexpected authentication frame "
1152 "(alg=%d transaction=%d)\n",
1153 dev
->name
, auth_alg
, auth_transaction
);
1157 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1158 printk(KERN_DEBUG
"%s: AP denied authentication (auth_alg=%d "
1159 "code=%d)\n", dev
->name
, ifsta
->auth_alg
, status_code
);
1160 if (status_code
== WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
) {
1162 const int num_algs
= ARRAY_SIZE(algs
);
1164 algs
[0] = algs
[1] = algs
[2] = 0xff;
1165 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
1166 algs
[0] = WLAN_AUTH_OPEN
;
1167 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
1168 algs
[1] = WLAN_AUTH_SHARED_KEY
;
1169 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
1170 algs
[2] = WLAN_AUTH_LEAP
;
1171 if (ifsta
->auth_alg
== WLAN_AUTH_OPEN
)
1173 else if (ifsta
->auth_alg
== WLAN_AUTH_SHARED_KEY
)
1177 for (i
= 0; i
< num_algs
; i
++) {
1179 if (pos
>= num_algs
)
1181 if (algs
[pos
] == ifsta
->auth_alg
||
1184 if (algs
[pos
] == WLAN_AUTH_SHARED_KEY
&&
1185 !ieee80211_sta_wep_configured(dev
))
1187 ifsta
->auth_alg
= algs
[pos
];
1188 printk(KERN_DEBUG
"%s: set auth_alg=%d for "
1190 dev
->name
, ifsta
->auth_alg
);
1197 switch (ifsta
->auth_alg
) {
1198 case WLAN_AUTH_OPEN
:
1199 case WLAN_AUTH_LEAP
:
1200 ieee80211_auth_completed(dev
, ifsta
);
1202 case WLAN_AUTH_SHARED_KEY
:
1203 if (ifsta
->auth_transaction
== 4)
1204 ieee80211_auth_completed(dev
, ifsta
);
1206 ieee80211_auth_challenge(dev
, ifsta
, mgmt
, len
);
1212 static void ieee80211_rx_mgmt_deauth(struct net_device
*dev
,
1213 struct ieee80211_if_sta
*ifsta
,
1214 struct ieee80211_mgmt
*mgmt
,
1218 DECLARE_MAC_BUF(mac
);
1221 printk(KERN_DEBUG
"%s: too short (%zd) deauthentication frame "
1222 "received from %s - ignored\n",
1223 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1227 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1228 printk(KERN_DEBUG
"%s: deauthentication frame received from "
1229 "unknown AP (SA=%s BSSID=%s) - "
1230 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1231 print_mac(mac
, mgmt
->bssid
));
1235 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
1237 printk(KERN_DEBUG
"%s: RX deauthentication from %s"
1239 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1241 if (ifsta
->flags
& IEEE80211_STA_AUTHENTICATED
) {
1242 printk(KERN_DEBUG
"%s: deauthenticated\n", dev
->name
);
1245 if (ifsta
->state
== IEEE80211_AUTHENTICATE
||
1246 ifsta
->state
== IEEE80211_ASSOCIATE
||
1247 ifsta
->state
== IEEE80211_ASSOCIATED
) {
1248 ifsta
->state
= IEEE80211_AUTHENTICATE
;
1249 mod_timer(&ifsta
->timer
, jiffies
+
1250 IEEE80211_RETRY_AUTH_INTERVAL
);
1253 ieee80211_set_disassoc(dev
, ifsta
, 1);
1254 ifsta
->flags
&= ~IEEE80211_STA_AUTHENTICATED
;
1258 static void ieee80211_rx_mgmt_disassoc(struct net_device
*dev
,
1259 struct ieee80211_if_sta
*ifsta
,
1260 struct ieee80211_mgmt
*mgmt
,
1264 DECLARE_MAC_BUF(mac
);
1267 printk(KERN_DEBUG
"%s: too short (%zd) disassociation frame "
1268 "received from %s - ignored\n",
1269 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1273 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1274 printk(KERN_DEBUG
"%s: disassociation frame received from "
1275 "unknown AP (SA=%s BSSID=%s) - "
1276 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1277 print_mac(mac
, mgmt
->bssid
));
1281 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
1283 printk(KERN_DEBUG
"%s: RX disassociation from %s"
1285 dev
->name
, print_mac(mac
, mgmt
->sa
), reason_code
);
1287 if (ifsta
->flags
& IEEE80211_STA_ASSOCIATED
)
1288 printk(KERN_DEBUG
"%s: disassociated\n", dev
->name
);
1290 if (ifsta
->state
== IEEE80211_ASSOCIATED
) {
1291 ifsta
->state
= IEEE80211_ASSOCIATE
;
1292 mod_timer(&ifsta
->timer
, jiffies
+
1293 IEEE80211_RETRY_AUTH_INTERVAL
);
1296 ieee80211_set_disassoc(dev
, ifsta
, 0);
1300 static void ieee80211_rx_mgmt_assoc_resp(struct net_device
*dev
,
1301 struct ieee80211_if_sta
*ifsta
,
1302 struct ieee80211_mgmt
*mgmt
,
1306 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1307 struct ieee80211_hw_mode
*mode
;
1308 struct sta_info
*sta
;
1310 u16 capab_info
, status_code
, aid
;
1311 struct ieee802_11_elems elems
;
1314 DECLARE_MAC_BUF(mac
);
1316 /* AssocResp and ReassocResp have identical structure, so process both
1317 * of them in this function. */
1319 if (ifsta
->state
!= IEEE80211_ASSOCIATE
) {
1320 printk(KERN_DEBUG
"%s: association frame received from "
1321 "%s, but not in associate state - ignored\n",
1322 dev
->name
, print_mac(mac
, mgmt
->sa
));
1327 printk(KERN_DEBUG
"%s: too short (%zd) association frame "
1328 "received from %s - ignored\n",
1329 dev
->name
, len
, print_mac(mac
, mgmt
->sa
));
1333 if (memcmp(ifsta
->bssid
, mgmt
->sa
, ETH_ALEN
) != 0) {
1334 printk(KERN_DEBUG
"%s: association frame received from "
1335 "unknown AP (SA=%s BSSID=%s) - "
1336 "ignored\n", dev
->name
, print_mac(mac
, mgmt
->sa
),
1337 print_mac(mac
, mgmt
->bssid
));
1341 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
1342 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
1343 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
1345 printk(KERN_DEBUG
"%s: RX %sssocResp from %s (capab=0x%x "
1346 "status=%d aid=%d)\n",
1347 dev
->name
, reassoc
? "Rea" : "A", print_mac(mac
, mgmt
->sa
),
1348 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
1350 if (status_code
!= WLAN_STATUS_SUCCESS
) {
1351 printk(KERN_DEBUG
"%s: AP denied association (code=%d)\n",
1352 dev
->name
, status_code
);
1353 /* if this was a reassociation, ensure we try a "full"
1354 * association next time. This works around some broken APs
1355 * which do not correctly reject reassociation requests. */
1356 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
1360 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1361 printk(KERN_DEBUG
"%s: invalid aid value %d; bits 15:14 not "
1362 "set\n", dev
->name
, aid
);
1363 aid
&= ~(BIT(15) | BIT(14));
1365 pos
= mgmt
->u
.assoc_resp
.variable
;
1366 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), &elems
);
1368 if (!elems
.supp_rates
) {
1369 printk(KERN_DEBUG
"%s: no SuppRates element in AssocResp\n",
1374 /* it probably doesn't, but if the frame includes an ERP value then
1375 * update our stored copy */
1376 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1377 struct ieee80211_sta_bss
*bss
1378 = ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1379 local
->hw
.conf
.channel
,
1380 ifsta
->ssid
, ifsta
->ssid_len
);
1382 bss
->erp_value
= elems
.erp_info
[0];
1383 bss
->has_erp_value
= 1;
1384 ieee80211_rx_bss_put(dev
, bss
);
1388 printk(KERN_DEBUG
"%s: associated\n", dev
->name
);
1390 ifsta
->ap_capab
= capab_info
;
1392 kfree(ifsta
->assocresp_ies
);
1393 ifsta
->assocresp_ies_len
= len
- (pos
- (u8
*) mgmt
);
1394 ifsta
->assocresp_ies
= kmalloc(ifsta
->assocresp_ies_len
, GFP_KERNEL
);
1395 if (ifsta
->assocresp_ies
)
1396 memcpy(ifsta
->assocresp_ies
, pos
, ifsta
->assocresp_ies_len
);
1398 ieee80211_set_associated(dev
, ifsta
, 1);
1400 /* Add STA entry for the AP */
1401 sta
= sta_info_get(local
, ifsta
->bssid
);
1403 struct ieee80211_sta_bss
*bss
;
1404 sta
= sta_info_add(local
, dev
, ifsta
->bssid
, GFP_KERNEL
);
1406 printk(KERN_DEBUG
"%s: failed to add STA entry for the"
1407 " AP\n", dev
->name
);
1410 bss
= ieee80211_rx_bss_get(dev
, ifsta
->bssid
,
1411 local
->hw
.conf
.channel
,
1412 ifsta
->ssid
, ifsta
->ssid_len
);
1414 sta
->last_rssi
= bss
->rssi
;
1415 sta
->last_signal
= bss
->signal
;
1416 sta
->last_noise
= bss
->noise
;
1417 ieee80211_rx_bss_put(dev
, bss
);
1422 sta
->flags
|= WLAN_STA_AUTH
| WLAN_STA_ASSOC
| WLAN_STA_ASSOC_AP
;
1425 mode
= local
->oper_hw_mode
;
1426 for (i
= 0; i
< elems
.supp_rates_len
; i
++) {
1427 int rate
= (elems
.supp_rates
[i
] & 0x7f) * 5;
1428 for (j
= 0; j
< mode
->num_rates
; j
++)
1429 if (mode
->rates
[j
].rate
== rate
)
1432 for (i
= 0; i
< elems
.ext_supp_rates_len
; i
++) {
1433 int rate
= (elems
.ext_supp_rates
[i
] & 0x7f) * 5;
1434 for (j
= 0; j
< mode
->num_rates
; j
++)
1435 if (mode
->rates
[j
].rate
== rate
)
1438 sta
->supp_rates
= rates
;
1440 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&& elems
.wmm_param
&&
1441 local
->ops
->conf_ht
) {
1442 struct ieee80211_ht_bss_info bss_info
;
1444 ieee80211_ht_cap_ie_to_ht_info(
1445 (struct ieee80211_ht_cap
*)
1446 elems
.ht_cap_elem
, &sta
->ht_info
);
1447 ieee80211_ht_addt_info_ie_to_ht_bss_info(
1448 (struct ieee80211_ht_addt_info
*)
1449 elems
.ht_info_elem
, &bss_info
);
1450 ieee80211_hw_config_ht(local
, 1, &sta
->ht_info
, &bss_info
);
1453 rate_control_rate_init(sta
, local
);
1455 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1456 sta
->flags
|= WLAN_STA_WME
;
1457 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1458 elems
.wmm_param_len
);
1464 ieee80211_associated(dev
, ifsta
);
1468 /* Caller must hold local->sta_bss_lock */
1469 static void __ieee80211_rx_bss_hash_add(struct net_device
*dev
,
1470 struct ieee80211_sta_bss
*bss
)
1472 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1473 bss
->hnext
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1474 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] = bss
;
1478 /* Caller must hold local->sta_bss_lock */
1479 static void __ieee80211_rx_bss_hash_del(struct net_device
*dev
,
1480 struct ieee80211_sta_bss
*bss
)
1482 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1483 struct ieee80211_sta_bss
*b
, *prev
= NULL
;
1484 b
= local
->sta_bss_hash
[STA_HASH(bss
->bssid
)];
1488 local
->sta_bss_hash
[STA_HASH(bss
->bssid
)] =
1491 prev
->hnext
= bss
->hnext
;
1500 static struct ieee80211_sta_bss
*
1501 ieee80211_rx_bss_add(struct net_device
*dev
, u8
*bssid
, int channel
,
1502 u8
*ssid
, u8 ssid_len
)
1504 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1505 struct ieee80211_sta_bss
*bss
;
1507 bss
= kzalloc(sizeof(*bss
), GFP_ATOMIC
);
1510 atomic_inc(&bss
->users
);
1511 atomic_inc(&bss
->users
);
1512 memcpy(bss
->bssid
, bssid
, ETH_ALEN
);
1513 bss
->channel
= channel
;
1514 if (ssid
&& ssid_len
<= IEEE80211_MAX_SSID_LEN
) {
1515 memcpy(bss
->ssid
, ssid
, ssid_len
);
1516 bss
->ssid_len
= ssid_len
;
1519 spin_lock_bh(&local
->sta_bss_lock
);
1520 /* TODO: order by RSSI? */
1521 list_add_tail(&bss
->list
, &local
->sta_bss_list
);
1522 __ieee80211_rx_bss_hash_add(dev
, bss
);
1523 spin_unlock_bh(&local
->sta_bss_lock
);
1528 static struct ieee80211_sta_bss
*
1529 ieee80211_rx_bss_get(struct net_device
*dev
, u8
*bssid
, int channel
,
1530 u8
*ssid
, u8 ssid_len
)
1532 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1533 struct ieee80211_sta_bss
*bss
;
1535 spin_lock_bh(&local
->sta_bss_lock
);
1536 bss
= local
->sta_bss_hash
[STA_HASH(bssid
)];
1538 if (!memcmp(bss
->bssid
, bssid
, ETH_ALEN
) &&
1539 bss
->channel
== channel
&&
1540 bss
->ssid_len
== ssid_len
&&
1541 (ssid_len
== 0 || !memcmp(bss
->ssid
, ssid
, ssid_len
))) {
1542 atomic_inc(&bss
->users
);
1547 spin_unlock_bh(&local
->sta_bss_lock
);
1552 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss
*bss
)
1562 static void ieee80211_rx_bss_put(struct net_device
*dev
,
1563 struct ieee80211_sta_bss
*bss
)
1565 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1566 if (!atomic_dec_and_test(&bss
->users
))
1569 spin_lock_bh(&local
->sta_bss_lock
);
1570 __ieee80211_rx_bss_hash_del(dev
, bss
);
1571 list_del(&bss
->list
);
1572 spin_unlock_bh(&local
->sta_bss_lock
);
1573 ieee80211_rx_bss_free(bss
);
1577 void ieee80211_rx_bss_list_init(struct net_device
*dev
)
1579 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1580 spin_lock_init(&local
->sta_bss_lock
);
1581 INIT_LIST_HEAD(&local
->sta_bss_list
);
1585 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
)
1587 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1588 struct ieee80211_sta_bss
*bss
, *tmp
;
1590 list_for_each_entry_safe(bss
, tmp
, &local
->sta_bss_list
, list
)
1591 ieee80211_rx_bss_put(dev
, bss
);
1595 static void ieee80211_rx_bss_info(struct net_device
*dev
,
1596 struct ieee80211_mgmt
*mgmt
,
1598 struct ieee80211_rx_status
*rx_status
,
1601 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1602 struct ieee802_11_elems elems
;
1605 struct ieee80211_sta_bss
*bss
;
1606 struct sta_info
*sta
;
1607 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1609 DECLARE_MAC_BUF(mac
);
1610 DECLARE_MAC_BUF(mac2
);
1612 if (!beacon
&& memcmp(mgmt
->da
, dev
->dev_addr
, ETH_ALEN
))
1613 return; /* ignore ProbeResp to foreign address */
1616 printk(KERN_DEBUG
"%s: RX %s from %s to %s\n",
1617 dev
->name
, beacon
? "Beacon" : "Probe Response",
1618 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
));
1621 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1625 timestamp
= le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
1627 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& beacon
&&
1628 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0) {
1629 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1630 static unsigned long last_tsf_debug
= 0;
1632 if (local
->ops
->get_tsf
)
1633 tsf
= local
->ops
->get_tsf(local_to_hw(local
));
1636 if (time_after(jiffies
, last_tsf_debug
+ 5 * HZ
)) {
1637 printk(KERN_DEBUG
"RX beacon SA=%s BSSID="
1638 "%s TSF=0x%llx BCN=0x%llx diff=%lld "
1640 print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->bssid
),
1641 (unsigned long long)tsf
,
1642 (unsigned long long)timestamp
,
1643 (unsigned long long)(tsf
- timestamp
),
1645 last_tsf_debug
= jiffies
;
1647 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1650 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
1652 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&& elems
.supp_rates
&&
1653 memcmp(mgmt
->bssid
, sdata
->u
.sta
.bssid
, ETH_ALEN
) == 0 &&
1654 (sta
= sta_info_get(local
, mgmt
->sa
))) {
1655 struct ieee80211_hw_mode
*mode
;
1656 struct ieee80211_rate
*rates
;
1658 u32 supp_rates
, prev_rates
;
1661 mode
= local
->sta_sw_scanning
?
1662 local
->scan_hw_mode
: local
->oper_hw_mode
;
1664 if (local
->sta_hw_scanning
) {
1665 /* search for the correct mode matches the beacon */
1666 list_for_each_entry(mode
, &local
->modes_list
, list
)
1667 if (mode
->mode
== rx_status
->phymode
)
1671 mode
= local
->oper_hw_mode
;
1673 rates
= mode
->rates
;
1674 num_rates
= mode
->num_rates
;
1677 for (i
= 0; i
< elems
.supp_rates_len
+
1678 elems
.ext_supp_rates_len
; i
++) {
1681 if (i
< elems
.supp_rates_len
)
1682 rate
= elems
.supp_rates
[i
];
1683 else if (elems
.ext_supp_rates
)
1684 rate
= elems
.ext_supp_rates
1685 [i
- elems
.supp_rates_len
];
1686 own_rate
= 5 * (rate
& 0x7f);
1687 for (j
= 0; j
< num_rates
; j
++)
1688 if (rates
[j
].rate
== own_rate
)
1689 supp_rates
|= BIT(j
);
1692 prev_rates
= sta
->supp_rates
;
1693 sta
->supp_rates
&= supp_rates
;
1694 if (sta
->supp_rates
== 0) {
1695 /* No matching rates - this should not really happen.
1696 * Make sure that at least one rate is marked
1697 * supported to avoid issues with TX rate ctrl. */
1698 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
1700 if (sta
->supp_rates
!= prev_rates
) {
1701 printk(KERN_DEBUG
"%s: updated supp_rates set for "
1702 "%s based on beacon info (0x%x & 0x%x -> "
1704 dev
->name
, print_mac(mac
, sta
->addr
), prev_rates
,
1705 supp_rates
, sta
->supp_rates
);
1713 if (elems
.ds_params
&& elems
.ds_params_len
== 1)
1714 channel
= elems
.ds_params
[0];
1716 channel
= rx_status
->channel
;
1718 bss
= ieee80211_rx_bss_get(dev
, mgmt
->bssid
, channel
,
1719 elems
.ssid
, elems
.ssid_len
);
1721 bss
= ieee80211_rx_bss_add(dev
, mgmt
->bssid
, channel
,
1722 elems
.ssid
, elems
.ssid_len
);
1727 /* TODO: order by RSSI? */
1728 spin_lock_bh(&local
->sta_bss_lock
);
1729 list_move_tail(&bss
->list
, &local
->sta_bss_list
);
1730 spin_unlock_bh(&local
->sta_bss_lock
);
1734 if (bss
->probe_resp
&& beacon
) {
1735 /* Do not allow beacon to override data from Probe Response. */
1736 ieee80211_rx_bss_put(dev
, bss
);
1740 /* save the ERP value so that it is available at association time */
1741 if (elems
.erp_info
&& elems
.erp_info_len
>= 1) {
1742 bss
->erp_value
= elems
.erp_info
[0];
1743 bss
->has_erp_value
= 1;
1746 bss
->beacon_int
= le16_to_cpu(mgmt
->u
.beacon
.beacon_int
);
1747 bss
->capability
= le16_to_cpu(mgmt
->u
.beacon
.capab_info
);
1749 bss
->supp_rates_len
= 0;
1750 if (elems
.supp_rates
) {
1751 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1752 if (clen
> elems
.supp_rates_len
)
1753 clen
= elems
.supp_rates_len
;
1754 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
], elems
.supp_rates
,
1756 bss
->supp_rates_len
+= clen
;
1758 if (elems
.ext_supp_rates
) {
1759 clen
= IEEE80211_MAX_SUPP_RATES
- bss
->supp_rates_len
;
1760 if (clen
> elems
.ext_supp_rates_len
)
1761 clen
= elems
.ext_supp_rates_len
;
1762 memcpy(&bss
->supp_rates
[bss
->supp_rates_len
],
1763 elems
.ext_supp_rates
, clen
);
1764 bss
->supp_rates_len
+= clen
;
1768 (!bss
->wpa_ie
|| bss
->wpa_ie_len
!= elems
.wpa_len
||
1769 memcmp(bss
->wpa_ie
, elems
.wpa
, elems
.wpa_len
))) {
1771 bss
->wpa_ie
= kmalloc(elems
.wpa_len
+ 2, GFP_ATOMIC
);
1773 memcpy(bss
->wpa_ie
, elems
.wpa
- 2, elems
.wpa_len
+ 2);
1774 bss
->wpa_ie_len
= elems
.wpa_len
+ 2;
1776 bss
->wpa_ie_len
= 0;
1777 } else if (!elems
.wpa
&& bss
->wpa_ie
) {
1780 bss
->wpa_ie_len
= 0;
1784 (!bss
->rsn_ie
|| bss
->rsn_ie_len
!= elems
.rsn_len
||
1785 memcmp(bss
->rsn_ie
, elems
.rsn
, elems
.rsn_len
))) {
1787 bss
->rsn_ie
= kmalloc(elems
.rsn_len
+ 2, GFP_ATOMIC
);
1789 memcpy(bss
->rsn_ie
, elems
.rsn
- 2, elems
.rsn_len
+ 2);
1790 bss
->rsn_ie_len
= elems
.rsn_len
+ 2;
1792 bss
->rsn_ie_len
= 0;
1793 } else if (!elems
.rsn
&& bss
->rsn_ie
) {
1796 bss
->rsn_ie_len
= 0;
1799 if (elems
.wmm_param
&&
1800 (!bss
->wmm_ie
|| bss
->wmm_ie_len
!= elems
.wmm_param_len
||
1801 memcmp(bss
->wmm_ie
, elems
.wmm_param
, elems
.wmm_param_len
))) {
1803 bss
->wmm_ie
= kmalloc(elems
.wmm_param_len
+ 2, GFP_ATOMIC
);
1805 memcpy(bss
->wmm_ie
, elems
.wmm_param
- 2,
1806 elems
.wmm_param_len
+ 2);
1807 bss
->wmm_ie_len
= elems
.wmm_param_len
+ 2;
1809 bss
->wmm_ie_len
= 0;
1810 } else if (!elems
.wmm_param
&& bss
->wmm_ie
) {
1813 bss
->wmm_ie_len
= 0;
1815 if (elems
.ht_cap_elem
&&
1816 (!bss
->ht_ie
|| bss
->ht_ie_len
!= elems
.ht_cap_elem_len
||
1817 memcmp(bss
->ht_ie
, elems
.ht_cap_elem
, elems
.ht_cap_elem_len
))) {
1819 bss
->ht_ie
= kmalloc(elems
.ht_cap_elem_len
+ 2, GFP_ATOMIC
);
1821 memcpy(bss
->ht_ie
, elems
.ht_cap_elem
- 2,
1822 elems
.ht_cap_elem_len
+ 2);
1823 bss
->ht_ie_len
= elems
.ht_cap_elem_len
+ 2;
1826 } else if (!elems
.ht_cap_elem
&& bss
->ht_ie
) {
1832 bss
->hw_mode
= rx_status
->phymode
;
1833 bss
->freq
= rx_status
->freq
;
1834 if (channel
!= rx_status
->channel
&&
1835 (bss
->hw_mode
== MODE_IEEE80211G
||
1836 bss
->hw_mode
== MODE_IEEE80211B
) &&
1837 channel
>= 1 && channel
<= 14) {
1838 static const int freq_list
[] = {
1839 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1840 2447, 2452, 2457, 2462, 2467, 2472, 2484
1842 /* IEEE 802.11g/b mode can receive packets from neighboring
1843 * channels, so map the channel into frequency. */
1844 bss
->freq
= freq_list
[channel
- 1];
1846 bss
->timestamp
= timestamp
;
1847 bss
->last_update
= jiffies
;
1848 bss
->rssi
= rx_status
->ssi
;
1849 bss
->signal
= rx_status
->signal
;
1850 bss
->noise
= rx_status
->noise
;
1853 ieee80211_rx_bss_put(dev
, bss
);
1857 static void ieee80211_rx_mgmt_probe_resp(struct net_device
*dev
,
1858 struct ieee80211_mgmt
*mgmt
,
1860 struct ieee80211_rx_status
*rx_status
)
1862 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 0);
1866 static void ieee80211_rx_mgmt_beacon(struct net_device
*dev
,
1867 struct ieee80211_mgmt
*mgmt
,
1869 struct ieee80211_rx_status
*rx_status
)
1871 struct ieee80211_sub_if_data
*sdata
;
1872 struct ieee80211_if_sta
*ifsta
;
1874 struct ieee802_11_elems elems
;
1875 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1876 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1878 ieee80211_rx_bss_info(dev
, mgmt
, len
, rx_status
, 1);
1880 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1881 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
1883 ifsta
= &sdata
->u
.sta
;
1885 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
) ||
1886 memcmp(ifsta
->bssid
, mgmt
->bssid
, ETH_ALEN
) != 0)
1889 /* Process beacon from the current BSS */
1890 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
1894 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
, len
- baselen
, &elems
);
1896 if (elems
.erp_info
&& elems
.erp_info_len
>= 1)
1897 ieee80211_handle_erp_ie(dev
, elems
.erp_info
[0]);
1899 if (elems
.ht_cap_elem
&& elems
.ht_info_elem
&&
1900 elems
.wmm_param
&& local
->ops
->conf_ht
&&
1901 conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) {
1902 struct ieee80211_ht_bss_info bss_info
;
1904 ieee80211_ht_addt_info_ie_to_ht_bss_info(
1905 (struct ieee80211_ht_addt_info
*)
1906 elems
.ht_info_elem
, &bss_info
);
1907 /* check if AP changed bss inforamation */
1908 if ((conf
->ht_bss_conf
.primary_channel
!=
1909 bss_info
.primary_channel
) ||
1910 (conf
->ht_bss_conf
.bss_cap
!= bss_info
.bss_cap
) ||
1911 (conf
->ht_bss_conf
.bss_op_mode
!= bss_info
.bss_op_mode
))
1912 ieee80211_hw_config_ht(local
, 1, &conf
->ht_conf
,
1916 if (elems
.wmm_param
&& (ifsta
->flags
& IEEE80211_STA_WMM_ENABLED
)) {
1917 ieee80211_sta_wmm_params(dev
, ifsta
, elems
.wmm_param
,
1918 elems
.wmm_param_len
);
1923 static void ieee80211_rx_mgmt_probe_req(struct net_device
*dev
,
1924 struct ieee80211_if_sta
*ifsta
,
1925 struct ieee80211_mgmt
*mgmt
,
1927 struct ieee80211_rx_status
*rx_status
)
1929 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
1930 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
1932 struct sk_buff
*skb
;
1933 struct ieee80211_mgmt
*resp
;
1935 DECLARE_MAC_BUF(mac
);
1936 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1937 DECLARE_MAC_BUF(mac2
);
1938 DECLARE_MAC_BUF(mac3
);
1941 if (sdata
->type
!= IEEE80211_IF_TYPE_IBSS
||
1942 ifsta
->state
!= IEEE80211_IBSS_JOINED
||
1943 len
< 24 + 2 || !ifsta
->probe_resp
)
1946 if (local
->ops
->tx_last_beacon
)
1947 tx_last_beacon
= local
->ops
->tx_last_beacon(local_to_hw(local
));
1951 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1952 printk(KERN_DEBUG
"%s: RX ProbeReq SA=%s DA=%s BSSID="
1953 "%s (tx_last_beacon=%d)\n",
1954 dev
->name
, print_mac(mac
, mgmt
->sa
), print_mac(mac2
, mgmt
->da
),
1955 print_mac(mac3
, mgmt
->bssid
), tx_last_beacon
);
1956 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1958 if (!tx_last_beacon
)
1961 if (memcmp(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
) != 0 &&
1962 memcmp(mgmt
->bssid
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
1965 end
= ((u8
*) mgmt
) + len
;
1966 pos
= mgmt
->u
.probe_req
.variable
;
1967 if (pos
[0] != WLAN_EID_SSID
||
1968 pos
+ 2 + pos
[1] > end
) {
1969 if (net_ratelimit()) {
1970 printk(KERN_DEBUG
"%s: Invalid SSID IE in ProbeReq "
1972 dev
->name
, print_mac(mac
, mgmt
->sa
));
1977 (pos
[1] != ifsta
->ssid_len
||
1978 memcmp(pos
+ 2, ifsta
->ssid
, ifsta
->ssid_len
) != 0)) {
1979 /* Ignore ProbeReq for foreign SSID */
1983 /* Reply with ProbeResp */
1984 skb
= skb_copy(ifsta
->probe_resp
, GFP_KERNEL
);
1988 resp
= (struct ieee80211_mgmt
*) skb
->data
;
1989 memcpy(resp
->da
, mgmt
->sa
, ETH_ALEN
);
1990 #ifdef CONFIG_MAC80211_IBSS_DEBUG
1991 printk(KERN_DEBUG
"%s: Sending ProbeResp to %s\n",
1992 dev
->name
, print_mac(mac
, resp
->da
));
1993 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
1994 ieee80211_sta_tx(dev
, skb
, 0);
1997 void ieee80211_rx_mgmt_action(struct net_device
*dev
,
1998 struct ieee80211_if_sta
*ifsta
,
1999 struct ieee80211_mgmt
*mgmt
,
2002 if (len
< IEEE80211_MIN_ACTION_SIZE
)
2005 switch (mgmt
->u
.action
.category
) {
2006 case WLAN_CATEGORY_BACK
:
2007 switch (mgmt
->u
.action
.u
.addba_req
.action_code
) {
2008 case WLAN_ACTION_ADDBA_REQ
:
2009 if (len
< (IEEE80211_MIN_ACTION_SIZE
+
2010 sizeof(mgmt
->u
.action
.u
.addba_req
)))
2012 ieee80211_sta_process_addba_request(dev
, mgmt
, len
);
2015 if (net_ratelimit())
2016 printk(KERN_DEBUG
"%s: received unsupported BACK\n",
2026 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
2027 struct ieee80211_rx_status
*rx_status
)
2029 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2030 struct ieee80211_sub_if_data
*sdata
;
2031 struct ieee80211_if_sta
*ifsta
;
2032 struct ieee80211_mgmt
*mgmt
;
2038 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2039 ifsta
= &sdata
->u
.sta
;
2041 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2042 fc
= le16_to_cpu(mgmt
->frame_control
);
2044 switch (fc
& IEEE80211_FCTL_STYPE
) {
2045 case IEEE80211_STYPE_PROBE_REQ
:
2046 case IEEE80211_STYPE_PROBE_RESP
:
2047 case IEEE80211_STYPE_BEACON
:
2048 memcpy(skb
->cb
, rx_status
, sizeof(*rx_status
));
2049 case IEEE80211_STYPE_AUTH
:
2050 case IEEE80211_STYPE_ASSOC_RESP
:
2051 case IEEE80211_STYPE_REASSOC_RESP
:
2052 case IEEE80211_STYPE_DEAUTH
:
2053 case IEEE80211_STYPE_DISASSOC
:
2054 case IEEE80211_STYPE_ACTION
:
2055 skb_queue_tail(&ifsta
->skb_queue
, skb
);
2056 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2059 printk(KERN_DEBUG
"%s: received unknown management frame - "
2060 "stype=%d\n", dev
->name
,
2061 (fc
& IEEE80211_FCTL_STYPE
) >> 4);
2070 static void ieee80211_sta_rx_queued_mgmt(struct net_device
*dev
,
2071 struct sk_buff
*skb
)
2073 struct ieee80211_rx_status
*rx_status
;
2074 struct ieee80211_sub_if_data
*sdata
;
2075 struct ieee80211_if_sta
*ifsta
;
2076 struct ieee80211_mgmt
*mgmt
;
2079 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2080 ifsta
= &sdata
->u
.sta
;
2082 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
2083 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2084 fc
= le16_to_cpu(mgmt
->frame_control
);
2086 switch (fc
& IEEE80211_FCTL_STYPE
) {
2087 case IEEE80211_STYPE_PROBE_REQ
:
2088 ieee80211_rx_mgmt_probe_req(dev
, ifsta
, mgmt
, skb
->len
,
2091 case IEEE80211_STYPE_PROBE_RESP
:
2092 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
, skb
->len
, rx_status
);
2094 case IEEE80211_STYPE_BEACON
:
2095 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
, rx_status
);
2097 case IEEE80211_STYPE_AUTH
:
2098 ieee80211_rx_mgmt_auth(dev
, ifsta
, mgmt
, skb
->len
);
2100 case IEEE80211_STYPE_ASSOC_RESP
:
2101 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 0);
2103 case IEEE80211_STYPE_REASSOC_RESP
:
2104 ieee80211_rx_mgmt_assoc_resp(dev
, ifsta
, mgmt
, skb
->len
, 1);
2106 case IEEE80211_STYPE_DEAUTH
:
2107 ieee80211_rx_mgmt_deauth(dev
, ifsta
, mgmt
, skb
->len
);
2109 case IEEE80211_STYPE_DISASSOC
:
2110 ieee80211_rx_mgmt_disassoc(dev
, ifsta
, mgmt
, skb
->len
);
2112 case IEEE80211_STYPE_ACTION
:
2113 ieee80211_rx_mgmt_action(dev
, ifsta
, mgmt
, skb
->len
);
2121 ieee80211_txrx_result
2122 ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
2123 struct ieee80211_rx_status
*rx_status
)
2125 struct ieee80211_mgmt
*mgmt
;
2131 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
2132 fc
= le16_to_cpu(mgmt
->frame_control
);
2134 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_CTL
)
2135 return TXRX_CONTINUE
;
2140 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2141 if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_PROBE_RESP
) {
2142 ieee80211_rx_mgmt_probe_resp(dev
, mgmt
,
2143 skb
->len
, rx_status
);
2146 } else if ((fc
& IEEE80211_FCTL_STYPE
) == IEEE80211_STYPE_BEACON
) {
2147 ieee80211_rx_mgmt_beacon(dev
, mgmt
, skb
->len
,
2153 return TXRX_CONTINUE
;
2157 static int ieee80211_sta_active_ibss(struct net_device
*dev
)
2159 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2161 struct sta_info
*sta
;
2163 read_lock_bh(&local
->sta_lock
);
2164 list_for_each_entry(sta
, &local
->sta_list
, list
) {
2165 if (sta
->dev
== dev
&&
2166 time_after(sta
->last_rx
+ IEEE80211_IBSS_MERGE_INTERVAL
,
2172 read_unlock_bh(&local
->sta_lock
);
2178 static void ieee80211_sta_expire(struct net_device
*dev
)
2180 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2181 struct sta_info
*sta
, *tmp
;
2182 LIST_HEAD(tmp_list
);
2183 DECLARE_MAC_BUF(mac
);
2185 write_lock_bh(&local
->sta_lock
);
2186 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
)
2187 if (time_after(jiffies
, sta
->last_rx
+
2188 IEEE80211_IBSS_INACTIVITY_LIMIT
)) {
2189 printk(KERN_DEBUG
"%s: expiring inactive STA %s\n",
2190 dev
->name
, print_mac(mac
, sta
->addr
));
2191 __sta_info_get(sta
);
2192 sta_info_remove(sta
);
2193 list_add(&sta
->list
, &tmp_list
);
2195 write_unlock_bh(&local
->sta_lock
);
2197 list_for_each_entry_safe(sta
, tmp
, &tmp_list
, list
) {
2204 static void ieee80211_sta_merge_ibss(struct net_device
*dev
,
2205 struct ieee80211_if_sta
*ifsta
)
2207 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2209 ieee80211_sta_expire(dev
);
2210 if (ieee80211_sta_active_ibss(dev
))
2213 printk(KERN_DEBUG
"%s: No active IBSS STAs - trying to scan for other "
2214 "IBSS networks with same SSID (merge)\n", dev
->name
);
2215 ieee80211_sta_req_scan(dev
, ifsta
->ssid
, ifsta
->ssid_len
);
2219 void ieee80211_sta_timer(unsigned long data
)
2221 struct ieee80211_sub_if_data
*sdata
=
2222 (struct ieee80211_sub_if_data
*) data
;
2223 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2224 struct ieee80211_local
*local
= wdev_priv(&sdata
->wdev
);
2226 set_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2227 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2231 void ieee80211_sta_work(struct work_struct
*work
)
2233 struct ieee80211_sub_if_data
*sdata
=
2234 container_of(work
, struct ieee80211_sub_if_data
, u
.sta
.work
);
2235 struct net_device
*dev
= sdata
->dev
;
2236 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2237 struct ieee80211_if_sta
*ifsta
;
2238 struct sk_buff
*skb
;
2240 if (!netif_running(dev
))
2243 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
)
2246 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
2247 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
) {
2248 printk(KERN_DEBUG
"%s: ieee80211_sta_work: non-STA interface "
2249 "(type=%d)\n", dev
->name
, sdata
->type
);
2252 ifsta
= &sdata
->u
.sta
;
2254 while ((skb
= skb_dequeue(&ifsta
->skb_queue
)))
2255 ieee80211_sta_rx_queued_mgmt(dev
, skb
);
2257 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
&&
2258 ifsta
->state
!= IEEE80211_ASSOCIATE
&&
2259 test_and_clear_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
)) {
2260 if (ifsta
->scan_ssid_len
)
2261 ieee80211_sta_start_scan(dev
, ifsta
->scan_ssid
, ifsta
->scan_ssid_len
);
2263 ieee80211_sta_start_scan(dev
, NULL
, 0);
2267 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
)) {
2268 if (ieee80211_sta_config_auth(dev
, ifsta
))
2270 clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
);
2271 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN
, &ifsta
->request
))
2274 switch (ifsta
->state
) {
2275 case IEEE80211_DISABLED
:
2277 case IEEE80211_AUTHENTICATE
:
2278 ieee80211_authenticate(dev
, ifsta
);
2280 case IEEE80211_ASSOCIATE
:
2281 ieee80211_associate(dev
, ifsta
);
2283 case IEEE80211_ASSOCIATED
:
2284 ieee80211_associated(dev
, ifsta
);
2286 case IEEE80211_IBSS_SEARCH
:
2287 ieee80211_sta_find_ibss(dev
, ifsta
);
2289 case IEEE80211_IBSS_JOINED
:
2290 ieee80211_sta_merge_ibss(dev
, ifsta
);
2293 printk(KERN_DEBUG
"ieee80211_sta_work: Unknown state %d\n",
2298 if (ieee80211_privacy_mismatch(dev
, ifsta
)) {
2299 printk(KERN_DEBUG
"%s: privacy configuration mismatch and "
2300 "mixed-cell disabled - disassociate\n", dev
->name
);
2302 ieee80211_send_disassoc(dev
, ifsta
, WLAN_REASON_UNSPECIFIED
);
2303 ieee80211_set_disassoc(dev
, ifsta
, 0);
2308 static void ieee80211_sta_reset_auth(struct net_device
*dev
,
2309 struct ieee80211_if_sta
*ifsta
)
2311 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2313 if (local
->ops
->reset_tsf
) {
2314 /* Reset own TSF to allow time synchronization work. */
2315 local
->ops
->reset_tsf(local_to_hw(local
));
2318 ifsta
->wmm_last_param_set
= -1; /* allow any WMM update */
2321 if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_OPEN
)
2322 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2323 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_SHARED_KEY
)
2324 ifsta
->auth_alg
= WLAN_AUTH_SHARED_KEY
;
2325 else if (ifsta
->auth_algs
& IEEE80211_AUTH_ALG_LEAP
)
2326 ifsta
->auth_alg
= WLAN_AUTH_LEAP
;
2328 ifsta
->auth_alg
= WLAN_AUTH_OPEN
;
2329 printk(KERN_DEBUG
"%s: Initial auth_alg=%d\n", dev
->name
,
2331 ifsta
->auth_transaction
= -1;
2332 ifsta
->flags
&= ~IEEE80211_STA_ASSOCIATED
;
2333 ifsta
->auth_tries
= ifsta
->assoc_tries
= 0;
2334 netif_carrier_off(dev
);
2338 void ieee80211_sta_req_auth(struct net_device
*dev
,
2339 struct ieee80211_if_sta
*ifsta
)
2341 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2342 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2344 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
2347 if ((ifsta
->flags
& (IEEE80211_STA_BSSID_SET
|
2348 IEEE80211_STA_AUTO_BSSID_SEL
)) &&
2349 (ifsta
->flags
& (IEEE80211_STA_SSID_SET
|
2350 IEEE80211_STA_AUTO_SSID_SEL
))) {
2351 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2352 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
2356 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta
*ifsta
,
2357 const char *ssid
, int ssid_len
)
2359 int tmp
, hidden_ssid
;
2361 if (ssid_len
== ifsta
->ssid_len
&&
2362 !memcmp(ifsta
->ssid
, ssid
, ssid_len
))
2365 if (ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
)
2371 if (ssid
[tmp
] != '\0') {
2377 if (hidden_ssid
&& ifsta
->ssid_len
== ssid_len
)
2380 if (ssid_len
== 1 && ssid
[0] == ' ')
2386 static int ieee80211_sta_config_auth(struct net_device
*dev
,
2387 struct ieee80211_if_sta
*ifsta
)
2389 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2390 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2391 struct ieee80211_sta_bss
*bss
, *selected
= NULL
;
2392 int top_rssi
= 0, freq
;
2394 if (!(ifsta
->flags
& (IEEE80211_STA_AUTO_SSID_SEL
|
2395 IEEE80211_STA_AUTO_BSSID_SEL
| IEEE80211_STA_AUTO_CHANNEL_SEL
))) {
2396 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2397 ieee80211_sta_reset_auth(dev
, ifsta
);
2401 spin_lock_bh(&local
->sta_bss_lock
);
2402 freq
= local
->oper_channel
->freq
;
2403 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2404 if (!(bss
->capability
& WLAN_CAPABILITY_ESS
))
2407 if (!!(bss
->capability
& WLAN_CAPABILITY_PRIVACY
) ^
2408 !!sdata
->default_key
)
2411 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_CHANNEL_SEL
) &&
2415 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_BSSID_SEL
) &&
2416 memcmp(bss
->bssid
, ifsta
->bssid
, ETH_ALEN
))
2419 if (!(ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
) &&
2420 !ieee80211_sta_match_ssid(ifsta
, bss
->ssid
, bss
->ssid_len
))
2423 if (!selected
|| top_rssi
< bss
->rssi
) {
2425 top_rssi
= bss
->rssi
;
2429 atomic_inc(&selected
->users
);
2430 spin_unlock_bh(&local
->sta_bss_lock
);
2433 ieee80211_set_channel(local
, -1, selected
->freq
);
2434 if (!(ifsta
->flags
& IEEE80211_STA_SSID_SET
))
2435 ieee80211_sta_set_ssid(dev
, selected
->ssid
,
2436 selected
->ssid_len
);
2437 ieee80211_sta_set_bssid(dev
, selected
->bssid
);
2438 ieee80211_rx_bss_put(dev
, selected
);
2439 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2440 ieee80211_sta_reset_auth(dev
, ifsta
);
2443 if (ifsta
->state
!= IEEE80211_AUTHENTICATE
) {
2444 if (ifsta
->flags
& IEEE80211_STA_AUTO_SSID_SEL
)
2445 ieee80211_sta_start_scan(dev
, NULL
, 0);
2447 ieee80211_sta_start_scan(dev
, ifsta
->ssid
,
2449 ifsta
->state
= IEEE80211_AUTHENTICATE
;
2450 set_bit(IEEE80211_STA_REQ_AUTH
, &ifsta
->request
);
2452 ifsta
->state
= IEEE80211_DISABLED
;
2457 static int ieee80211_sta_join_ibss(struct net_device
*dev
,
2458 struct ieee80211_if_sta
*ifsta
,
2459 struct ieee80211_sta_bss
*bss
)
2461 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2462 int res
, rates
, i
, j
;
2463 struct sk_buff
*skb
;
2464 struct ieee80211_mgmt
*mgmt
;
2465 struct ieee80211_tx_control control
;
2466 struct ieee80211_rate
*rate
;
2467 struct ieee80211_hw_mode
*mode
;
2468 struct rate_control_extra extra
;
2470 struct ieee80211_sub_if_data
*sdata
;
2472 /* Remove possible STA entries from other IBSS networks. */
2473 sta_info_flush(local
, NULL
);
2475 if (local
->ops
->reset_tsf
) {
2476 /* Reset own TSF to allow time synchronization work. */
2477 local
->ops
->reset_tsf(local_to_hw(local
));
2479 memcpy(ifsta
->bssid
, bss
->bssid
, ETH_ALEN
);
2480 res
= ieee80211_if_config(dev
);
2484 local
->hw
.conf
.beacon_int
= bss
->beacon_int
>= 10 ? bss
->beacon_int
: 10;
2486 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2487 sdata
->drop_unencrypted
= bss
->capability
&
2488 WLAN_CAPABILITY_PRIVACY
? 1 : 0;
2490 res
= ieee80211_set_channel(local
, -1, bss
->freq
);
2492 if (!(local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)) {
2493 printk(KERN_DEBUG
"%s: IBSS not allowed on channel %d "
2494 "(%d MHz)\n", dev
->name
, local
->hw
.conf
.channel
,
2495 local
->hw
.conf
.freq
);
2499 /* Set beacon template based on scan results */
2500 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 400);
2505 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2507 mgmt
= (struct ieee80211_mgmt
*)
2508 skb_put(skb
, 24 + sizeof(mgmt
->u
.beacon
));
2509 memset(mgmt
, 0, 24 + sizeof(mgmt
->u
.beacon
));
2510 mgmt
->frame_control
= IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2511 IEEE80211_STYPE_BEACON
);
2512 memset(mgmt
->da
, 0xff, ETH_ALEN
);
2513 memcpy(mgmt
->sa
, dev
->dev_addr
, ETH_ALEN
);
2514 memcpy(mgmt
->bssid
, ifsta
->bssid
, ETH_ALEN
);
2515 mgmt
->u
.beacon
.beacon_int
=
2516 cpu_to_le16(local
->hw
.conf
.beacon_int
);
2517 mgmt
->u
.beacon
.capab_info
= cpu_to_le16(bss
->capability
);
2519 pos
= skb_put(skb
, 2 + ifsta
->ssid_len
);
2520 *pos
++ = WLAN_EID_SSID
;
2521 *pos
++ = ifsta
->ssid_len
;
2522 memcpy(pos
, ifsta
->ssid
, ifsta
->ssid_len
);
2524 rates
= bss
->supp_rates_len
;
2527 pos
= skb_put(skb
, 2 + rates
);
2528 *pos
++ = WLAN_EID_SUPP_RATES
;
2530 memcpy(pos
, bss
->supp_rates
, rates
);
2532 pos
= skb_put(skb
, 2 + 1);
2533 *pos
++ = WLAN_EID_DS_PARAMS
;
2535 *pos
++ = bss
->channel
;
2537 pos
= skb_put(skb
, 2 + 2);
2538 *pos
++ = WLAN_EID_IBSS_PARAMS
;
2540 /* FIX: set ATIM window based on scan results */
2544 if (bss
->supp_rates_len
> 8) {
2545 rates
= bss
->supp_rates_len
- 8;
2546 pos
= skb_put(skb
, 2 + rates
);
2547 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2549 memcpy(pos
, &bss
->supp_rates
[8], rates
);
2552 memset(&control
, 0, sizeof(control
));
2553 memset(&extra
, 0, sizeof(extra
));
2554 extra
.mode
= local
->oper_hw_mode
;
2555 rate
= rate_control_get_rate(local
, dev
, skb
, &extra
);
2557 printk(KERN_DEBUG
"%s: Failed to determine TX rate "
2558 "for IBSS beacon\n", dev
->name
);
2562 ((sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
) &&
2563 (rate
->flags
& IEEE80211_RATE_PREAMBLE2
)) ?
2564 rate
->val2
: rate
->val
;
2565 control
.antenna_sel_tx
= local
->hw
.conf
.antenna_sel_tx
;
2566 control
.power_level
= local
->hw
.conf
.power_level
;
2567 control
.flags
|= IEEE80211_TXCTL_NO_ACK
;
2568 control
.retry_limit
= 1;
2570 ifsta
->probe_resp
= skb_copy(skb
, GFP_ATOMIC
);
2571 if (ifsta
->probe_resp
) {
2572 mgmt
= (struct ieee80211_mgmt
*)
2573 ifsta
->probe_resp
->data
;
2574 mgmt
->frame_control
=
2575 IEEE80211_FC(IEEE80211_FTYPE_MGMT
,
2576 IEEE80211_STYPE_PROBE_RESP
);
2578 printk(KERN_DEBUG
"%s: Could not allocate ProbeResp "
2579 "template for IBSS\n", dev
->name
);
2582 if (local
->ops
->beacon_update
&&
2583 local
->ops
->beacon_update(local_to_hw(local
),
2584 skb
, &control
) == 0) {
2585 printk(KERN_DEBUG
"%s: Configured IBSS beacon "
2586 "template based on scan results\n", dev
->name
);
2591 mode
= local
->oper_hw_mode
;
2592 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
2593 int bitrate
= (bss
->supp_rates
[i
] & 0x7f) * 5;
2594 for (j
= 0; j
< mode
->num_rates
; j
++)
2595 if (mode
->rates
[j
].rate
== bitrate
)
2598 ifsta
->supp_rates_bits
= rates
;
2602 printk(KERN_DEBUG
"%s: Failed to configure IBSS beacon "
2603 "template\n", dev
->name
);
2607 ifsta
->state
= IEEE80211_IBSS_JOINED
;
2608 mod_timer(&ifsta
->timer
, jiffies
+ IEEE80211_IBSS_MERGE_INTERVAL
);
2610 ieee80211_rx_bss_put(dev
, bss
);
2616 static int ieee80211_sta_create_ibss(struct net_device
*dev
,
2617 struct ieee80211_if_sta
*ifsta
)
2619 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2620 struct ieee80211_sta_bss
*bss
;
2621 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2622 struct ieee80211_hw_mode
*mode
;
2623 u8 bssid
[ETH_ALEN
], *pos
;
2625 DECLARE_MAC_BUF(mac
);
2628 /* Easier testing, use fixed BSSID. */
2629 memset(bssid
, 0xfe, ETH_ALEN
);
2631 /* Generate random, not broadcast, locally administered BSSID. Mix in
2632 * own MAC address to make sure that devices that do not have proper
2633 * random number generator get different BSSID. */
2634 get_random_bytes(bssid
, ETH_ALEN
);
2635 for (i
= 0; i
< ETH_ALEN
; i
++)
2636 bssid
[i
] ^= dev
->dev_addr
[i
];
2641 printk(KERN_DEBUG
"%s: Creating new IBSS network, BSSID %s\n",
2642 dev
->name
, print_mac(mac
, bssid
));
2644 bss
= ieee80211_rx_bss_add(dev
, bssid
, local
->hw
.conf
.channel
,
2645 sdata
->u
.sta
.ssid
, sdata
->u
.sta
.ssid_len
);
2649 mode
= local
->oper_hw_mode
;
2651 if (local
->hw
.conf
.beacon_int
== 0)
2652 local
->hw
.conf
.beacon_int
= 100;
2653 bss
->beacon_int
= local
->hw
.conf
.beacon_int
;
2654 bss
->hw_mode
= local
->hw
.conf
.phymode
;
2655 bss
->freq
= local
->hw
.conf
.freq
;
2656 bss
->last_update
= jiffies
;
2657 bss
->capability
= WLAN_CAPABILITY_IBSS
;
2658 if (sdata
->default_key
) {
2659 bss
->capability
|= WLAN_CAPABILITY_PRIVACY
;
2661 sdata
->drop_unencrypted
= 0;
2662 bss
->supp_rates_len
= mode
->num_rates
;
2663 pos
= bss
->supp_rates
;
2664 for (i
= 0; i
< mode
->num_rates
; i
++) {
2665 int rate
= mode
->rates
[i
].rate
;
2666 *pos
++ = (u8
) (rate
/ 5);
2669 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2673 static int ieee80211_sta_find_ibss(struct net_device
*dev
,
2674 struct ieee80211_if_sta
*ifsta
)
2676 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2677 struct ieee80211_sta_bss
*bss
;
2681 DECLARE_MAC_BUF(mac
);
2682 DECLARE_MAC_BUF(mac2
);
2684 if (ifsta
->ssid_len
== 0)
2687 active_ibss
= ieee80211_sta_active_ibss(dev
);
2688 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2689 printk(KERN_DEBUG
"%s: sta_find_ibss (active_ibss=%d)\n",
2690 dev
->name
, active_ibss
);
2691 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2692 spin_lock_bh(&local
->sta_bss_lock
);
2693 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
2694 if (ifsta
->ssid_len
!= bss
->ssid_len
||
2695 memcmp(ifsta
->ssid
, bss
->ssid
, bss
->ssid_len
) != 0
2696 || !(bss
->capability
& WLAN_CAPABILITY_IBSS
))
2698 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2699 printk(KERN_DEBUG
" bssid=%s found\n",
2700 print_mac(mac
, bss
->bssid
));
2701 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2702 memcpy(bssid
, bss
->bssid
, ETH_ALEN
);
2704 if (active_ibss
|| memcmp(bssid
, ifsta
->bssid
, ETH_ALEN
) != 0)
2707 spin_unlock_bh(&local
->sta_bss_lock
);
2709 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2710 printk(KERN_DEBUG
" sta_find_ibss: selected %s current "
2711 "%s\n", print_mac(mac
, bssid
), print_mac(mac2
, ifsta
->bssid
));
2712 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2713 if (found
&& memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0 &&
2714 (bss
= ieee80211_rx_bss_get(dev
, bssid
, local
->hw
.conf
.channel
,
2715 ifsta
->ssid
, ifsta
->ssid_len
))) {
2716 printk(KERN_DEBUG
"%s: Selected IBSS BSSID %s"
2717 " based on configured SSID\n",
2718 dev
->name
, print_mac(mac
, bssid
));
2719 return ieee80211_sta_join_ibss(dev
, ifsta
, bss
);
2721 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2722 printk(KERN_DEBUG
" did not try to join ibss\n");
2723 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2725 /* Selected IBSS not found in current scan results - try to scan */
2726 if (ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2727 !ieee80211_sta_active_ibss(dev
)) {
2728 mod_timer(&ifsta
->timer
, jiffies
+
2729 IEEE80211_IBSS_MERGE_INTERVAL
);
2730 } else if (time_after(jiffies
, local
->last_scan_completed
+
2731 IEEE80211_SCAN_INTERVAL
)) {
2732 printk(KERN_DEBUG
"%s: Trigger new scan to find an IBSS to "
2733 "join\n", dev
->name
);
2734 return ieee80211_sta_req_scan(dev
, ifsta
->ssid
,
2736 } else if (ifsta
->state
!= IEEE80211_IBSS_JOINED
) {
2737 int interval
= IEEE80211_SCAN_INTERVAL
;
2739 if (time_after(jiffies
, ifsta
->ibss_join_req
+
2740 IEEE80211_IBSS_JOIN_TIMEOUT
)) {
2741 if ((ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) &&
2742 local
->oper_channel
->flag
& IEEE80211_CHAN_W_IBSS
)
2743 return ieee80211_sta_create_ibss(dev
, ifsta
);
2744 if (ifsta
->flags
& IEEE80211_STA_CREATE_IBSS
) {
2745 printk(KERN_DEBUG
"%s: IBSS not allowed on the"
2746 " configured channel %d (%d MHz)\n",
2747 dev
->name
, local
->hw
.conf
.channel
,
2748 local
->hw
.conf
.freq
);
2751 /* No IBSS found - decrease scan interval and continue
2753 interval
= IEEE80211_SCAN_INTERVAL_SLOW
;
2756 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2757 mod_timer(&ifsta
->timer
, jiffies
+ interval
);
2765 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
)
2767 struct ieee80211_sub_if_data
*sdata
;
2768 struct ieee80211_if_sta
*ifsta
;
2769 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
2771 if (len
> IEEE80211_MAX_SSID_LEN
)
2774 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2776 if (local
->ops
->conf_tx
) {
2777 struct ieee80211_tx_queue_params qparam
;
2780 memset(&qparam
, 0, sizeof(qparam
));
2781 /* TODO: are these ok defaults for all hw_modes? */
2784 local
->hw
.conf
.phymode
== MODE_IEEE80211B
? 31 : 15;
2785 qparam
.cw_max
= 1023;
2786 qparam
.burst_time
= 0;
2787 for (i
= IEEE80211_TX_QUEUE_DATA0
; i
< NUM_TX_DATA_QUEUES
; i
++)
2789 local
->ops
->conf_tx(local_to_hw(local
),
2790 i
+ IEEE80211_TX_QUEUE_DATA0
,
2793 /* IBSS uses different parameters for Beacon sending */
2797 local
->ops
->conf_tx(local_to_hw(local
),
2798 IEEE80211_TX_QUEUE_BEACON
, &qparam
);
2801 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2802 ifsta
= &sdata
->u
.sta
;
2804 if (ifsta
->ssid_len
!= len
|| memcmp(ifsta
->ssid
, ssid
, len
) != 0)
2805 ifsta
->flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
2806 memcpy(ifsta
->ssid
, ssid
, len
);
2807 memset(ifsta
->ssid
+ len
, 0, IEEE80211_MAX_SSID_LEN
- len
);
2808 ifsta
->ssid_len
= len
;
2811 ifsta
->flags
|= IEEE80211_STA_SSID_SET
;
2813 ifsta
->flags
&= ~IEEE80211_STA_SSID_SET
;
2814 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2815 !(ifsta
->flags
& IEEE80211_STA_BSSID_SET
)) {
2816 ifsta
->ibss_join_req
= jiffies
;
2817 ifsta
->state
= IEEE80211_IBSS_SEARCH
;
2818 return ieee80211_sta_find_ibss(dev
, ifsta
);
2824 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
)
2826 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2827 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2828 memcpy(ssid
, ifsta
->ssid
, ifsta
->ssid_len
);
2829 *len
= ifsta
->ssid_len
;
2834 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
)
2836 struct ieee80211_sub_if_data
*sdata
;
2837 struct ieee80211_if_sta
*ifsta
;
2840 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2841 ifsta
= &sdata
->u
.sta
;
2843 if (memcmp(ifsta
->bssid
, bssid
, ETH_ALEN
) != 0) {
2844 memcpy(ifsta
->bssid
, bssid
, ETH_ALEN
);
2845 res
= ieee80211_if_config(dev
);
2847 printk(KERN_DEBUG
"%s: Failed to config new BSSID to "
2848 "the low-level driver\n", dev
->name
);
2853 if (is_valid_ether_addr(bssid
))
2854 ifsta
->flags
|= IEEE80211_STA_BSSID_SET
;
2856 ifsta
->flags
&= ~IEEE80211_STA_BSSID_SET
;
2862 static void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
2863 struct ieee80211_sub_if_data
*sdata
,
2866 struct sk_buff
*skb
;
2867 struct ieee80211_hdr
*nullfunc
;
2870 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 24);
2872 printk(KERN_DEBUG
"%s: failed to allocate buffer for nullfunc "
2873 "frame\n", sdata
->dev
->name
);
2876 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
2878 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 24);
2879 memset(nullfunc
, 0, 24);
2880 fc
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
2881 IEEE80211_FCTL_TODS
;
2883 fc
|= IEEE80211_FCTL_PM
;
2884 nullfunc
->frame_control
= cpu_to_le16(fc
);
2885 memcpy(nullfunc
->addr1
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2886 memcpy(nullfunc
->addr2
, sdata
->dev
->dev_addr
, ETH_ALEN
);
2887 memcpy(nullfunc
->addr3
, sdata
->u
.sta
.bssid
, ETH_ALEN
);
2889 ieee80211_sta_tx(sdata
->dev
, skb
, 0);
2893 void ieee80211_scan_completed(struct ieee80211_hw
*hw
)
2895 struct ieee80211_local
*local
= hw_to_local(hw
);
2896 struct net_device
*dev
= local
->scan_dev
;
2897 struct ieee80211_sub_if_data
*sdata
;
2898 union iwreq_data wrqu
;
2900 local
->last_scan_completed
= jiffies
;
2901 memset(&wrqu
, 0, sizeof(wrqu
));
2902 wireless_send_event(dev
, SIOCGIWSCAN
, &wrqu
, NULL
);
2904 if (local
->sta_hw_scanning
) {
2905 local
->sta_hw_scanning
= 0;
2909 local
->sta_sw_scanning
= 0;
2910 if (ieee80211_hw_config(local
))
2911 printk(KERN_DEBUG
"%s: failed to restore operational "
2912 "channel after scan\n", dev
->name
);
2915 netif_tx_lock_bh(local
->mdev
);
2916 local
->filter_flags
&= ~FIF_BCN_PRBRESP_PROMISC
;
2917 local
->ops
->configure_filter(local_to_hw(local
),
2918 FIF_BCN_PRBRESP_PROMISC
,
2919 &local
->filter_flags
,
2920 local
->mdev
->mc_count
,
2921 local
->mdev
->mc_list
);
2923 netif_tx_unlock_bh(local
->mdev
);
2926 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
2928 /* No need to wake the master device. */
2929 if (sdata
->dev
== local
->mdev
)
2932 if (sdata
->type
== IEEE80211_IF_TYPE_STA
) {
2933 if (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
)
2934 ieee80211_send_nullfunc(local
, sdata
, 0);
2935 ieee80211_sta_timer((unsigned long)sdata
);
2938 netif_wake_queue(sdata
->dev
);
2943 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2944 if (sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
2945 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
2946 if (!(ifsta
->flags
& IEEE80211_STA_BSSID_SET
) ||
2947 (!ifsta
->state
== IEEE80211_IBSS_JOINED
&&
2948 !ieee80211_sta_active_ibss(dev
)))
2949 ieee80211_sta_find_ibss(dev
, ifsta
);
2952 EXPORT_SYMBOL(ieee80211_scan_completed
);
2954 void ieee80211_sta_scan_work(struct work_struct
*work
)
2956 struct ieee80211_local
*local
=
2957 container_of(work
, struct ieee80211_local
, scan_work
.work
);
2958 struct net_device
*dev
= local
->scan_dev
;
2959 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
2960 struct ieee80211_hw_mode
*mode
;
2961 struct ieee80211_channel
*chan
;
2963 unsigned long next_delay
= 0;
2965 if (!local
->sta_sw_scanning
)
2968 switch (local
->scan_state
) {
2969 case SCAN_SET_CHANNEL
:
2970 mode
= local
->scan_hw_mode
;
2971 if (local
->scan_hw_mode
->list
.next
== &local
->modes_list
&&
2972 local
->scan_channel_idx
>= mode
->num_channels
) {
2973 ieee80211_scan_completed(local_to_hw(local
));
2976 skip
= !(local
->enabled_modes
& (1 << mode
->mode
));
2977 chan
= &mode
->channels
[local
->scan_channel_idx
];
2978 if (!(chan
->flag
& IEEE80211_CHAN_W_SCAN
) ||
2979 (sdata
->type
== IEEE80211_IF_TYPE_IBSS
&&
2980 !(chan
->flag
& IEEE80211_CHAN_W_IBSS
)) ||
2981 (local
->hw_modes
& local
->enabled_modes
&
2982 (1 << MODE_IEEE80211G
) && mode
->mode
== MODE_IEEE80211B
))
2987 printk(KERN_DEBUG
"%s: scan channel %d (%d MHz)\n",
2988 dev
->name
, chan
->chan
, chan
->freq
);
2991 local
->scan_channel
= chan
;
2992 if (ieee80211_hw_config(local
)) {
2993 printk(KERN_DEBUG
"%s: failed to set channel "
2994 "%d (%d MHz) for scan\n", dev
->name
,
2995 chan
->chan
, chan
->freq
);
3000 local
->scan_channel_idx
++;
3001 if (local
->scan_channel_idx
>= local
->scan_hw_mode
->num_channels
) {
3002 if (local
->scan_hw_mode
->list
.next
!= &local
->modes_list
) {
3003 local
->scan_hw_mode
= list_entry(local
->scan_hw_mode
->list
.next
,
3004 struct ieee80211_hw_mode
,
3006 local
->scan_channel_idx
= 0;
3013 next_delay
= IEEE80211_PROBE_DELAY
+
3014 usecs_to_jiffies(local
->hw
.channel_change_time
);
3015 local
->scan_state
= SCAN_SEND_PROBE
;
3017 case SCAN_SEND_PROBE
:
3018 if (local
->scan_channel
->flag
& IEEE80211_CHAN_W_ACTIVE_SCAN
) {
3019 ieee80211_send_probe_req(dev
, NULL
, local
->scan_ssid
,
3020 local
->scan_ssid_len
);
3021 next_delay
= IEEE80211_CHANNEL_TIME
;
3023 next_delay
= IEEE80211_PASSIVE_CHANNEL_TIME
;
3024 local
->scan_state
= SCAN_SET_CHANNEL
;
3028 if (local
->sta_sw_scanning
)
3029 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3034 static int ieee80211_sta_start_scan(struct net_device
*dev
,
3035 u8
*ssid
, size_t ssid_len
)
3037 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3038 struct ieee80211_sub_if_data
*sdata
;
3040 if (ssid_len
> IEEE80211_MAX_SSID_LEN
)
3043 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
3044 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3047 * ScanType: ACTIVE, PASSIVE
3048 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3049 * a Probe frame during active scanning
3051 * MinChannelTime (>= ProbeDelay), in TU
3052 * MaxChannelTime: (>= MinChannelTime), in TU
3055 /* MLME-SCAN.confirm
3057 * ResultCode: SUCCESS, INVALID_PARAMETERS
3060 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3061 if (local
->scan_dev
== dev
)
3066 if (local
->ops
->hw_scan
) {
3067 int rc
= local
->ops
->hw_scan(local_to_hw(local
),
3070 local
->sta_hw_scanning
= 1;
3071 local
->scan_dev
= dev
;
3076 local
->sta_sw_scanning
= 1;
3079 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
3081 /* Don't stop the master interface, otherwise we can't transmit
3083 if (sdata
->dev
== local
->mdev
)
3086 netif_stop_queue(sdata
->dev
);
3087 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
3088 (sdata
->u
.sta
.flags
& IEEE80211_STA_ASSOCIATED
))
3089 ieee80211_send_nullfunc(local
, sdata
, 1);
3094 local
->scan_ssid_len
= ssid_len
;
3095 memcpy(local
->scan_ssid
, ssid
, ssid_len
);
3097 local
->scan_ssid_len
= 0;
3098 local
->scan_state
= SCAN_SET_CHANNEL
;
3099 local
->scan_hw_mode
= list_entry(local
->modes_list
.next
,
3100 struct ieee80211_hw_mode
,
3102 local
->scan_channel_idx
= 0;
3103 local
->scan_dev
= dev
;
3105 netif_tx_lock_bh(local
->mdev
);
3106 local
->filter_flags
|= FIF_BCN_PRBRESP_PROMISC
;
3107 local
->ops
->configure_filter(local_to_hw(local
),
3108 FIF_BCN_PRBRESP_PROMISC
,
3109 &local
->filter_flags
,
3110 local
->mdev
->mc_count
,
3111 local
->mdev
->mc_list
);
3112 netif_tx_unlock_bh(local
->mdev
);
3114 /* TODO: start scan as soon as all nullfunc frames are ACKed */
3115 queue_delayed_work(local
->hw
.workqueue
, &local
->scan_work
,
3116 IEEE80211_CHANNEL_TIME
);
3122 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
)
3124 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3125 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3126 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3128 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
3129 return ieee80211_sta_start_scan(dev
, ssid
, ssid_len
);
3131 if (local
->sta_sw_scanning
|| local
->sta_hw_scanning
) {
3132 if (local
->scan_dev
== dev
)
3137 ifsta
->scan_ssid_len
= ssid_len
;
3139 memcpy(ifsta
->scan_ssid
, ssid
, ssid_len
);
3140 set_bit(IEEE80211_STA_REQ_SCAN
, &ifsta
->request
);
3141 queue_work(local
->hw
.workqueue
, &ifsta
->work
);
3146 ieee80211_sta_scan_result(struct net_device
*dev
,
3147 struct ieee80211_sta_bss
*bss
,
3148 char *current_ev
, char *end_buf
)
3150 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3151 struct iw_event iwe
;
3153 if (time_after(jiffies
,
3154 bss
->last_update
+ IEEE80211_SCAN_RESULT_EXPIRE
))
3157 if (!(local
->enabled_modes
& (1 << bss
->hw_mode
)))
3160 memset(&iwe
, 0, sizeof(iwe
));
3161 iwe
.cmd
= SIOCGIWAP
;
3162 iwe
.u
.ap_addr
.sa_family
= ARPHRD_ETHER
;
3163 memcpy(iwe
.u
.ap_addr
.sa_data
, bss
->bssid
, ETH_ALEN
);
3164 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3167 memset(&iwe
, 0, sizeof(iwe
));
3168 iwe
.cmd
= SIOCGIWESSID
;
3169 iwe
.u
.data
.length
= bss
->ssid_len
;
3170 iwe
.u
.data
.flags
= 1;
3171 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3174 if (bss
->capability
& (WLAN_CAPABILITY_ESS
| WLAN_CAPABILITY_IBSS
)) {
3175 memset(&iwe
, 0, sizeof(iwe
));
3176 iwe
.cmd
= SIOCGIWMODE
;
3177 if (bss
->capability
& WLAN_CAPABILITY_ESS
)
3178 iwe
.u
.mode
= IW_MODE_MASTER
;
3180 iwe
.u
.mode
= IW_MODE_ADHOC
;
3181 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3185 memset(&iwe
, 0, sizeof(iwe
));
3186 iwe
.cmd
= SIOCGIWFREQ
;
3187 iwe
.u
.freq
.m
= bss
->channel
;
3189 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3191 iwe
.u
.freq
.m
= bss
->freq
* 100000;
3193 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3196 memset(&iwe
, 0, sizeof(iwe
));
3198 iwe
.u
.qual
.qual
= bss
->signal
;
3199 iwe
.u
.qual
.level
= bss
->rssi
;
3200 iwe
.u
.qual
.noise
= bss
->noise
;
3201 iwe
.u
.qual
.updated
= local
->wstats_flags
;
3202 current_ev
= iwe_stream_add_event(current_ev
, end_buf
, &iwe
,
3205 memset(&iwe
, 0, sizeof(iwe
));
3206 iwe
.cmd
= SIOCGIWENCODE
;
3207 if (bss
->capability
& WLAN_CAPABILITY_PRIVACY
)
3208 iwe
.u
.data
.flags
= IW_ENCODE_ENABLED
| IW_ENCODE_NOKEY
;
3210 iwe
.u
.data
.flags
= IW_ENCODE_DISABLED
;
3211 iwe
.u
.data
.length
= 0;
3212 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
, "");
3214 if (bss
&& bss
->wpa_ie
) {
3215 memset(&iwe
, 0, sizeof(iwe
));
3216 iwe
.cmd
= IWEVGENIE
;
3217 iwe
.u
.data
.length
= bss
->wpa_ie_len
;
3218 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3222 if (bss
&& bss
->rsn_ie
) {
3223 memset(&iwe
, 0, sizeof(iwe
));
3224 iwe
.cmd
= IWEVGENIE
;
3225 iwe
.u
.data
.length
= bss
->rsn_ie_len
;
3226 current_ev
= iwe_stream_add_point(current_ev
, end_buf
, &iwe
,
3230 if (bss
&& bss
->supp_rates_len
> 0) {
3231 /* display all supported rates in readable format */
3232 char *p
= current_ev
+ IW_EV_LCP_LEN
;
3235 memset(&iwe
, 0, sizeof(iwe
));
3236 iwe
.cmd
= SIOCGIWRATE
;
3237 /* Those two flags are ignored... */
3238 iwe
.u
.bitrate
.fixed
= iwe
.u
.bitrate
.disabled
= 0;
3240 for (i
= 0; i
< bss
->supp_rates_len
; i
++) {
3241 iwe
.u
.bitrate
.value
= ((bss
->supp_rates
[i
] &
3243 p
= iwe_stream_add_value(current_ev
, p
,
3244 end_buf
, &iwe
, IW_EV_PARAM_LEN
);
3251 buf
= kmalloc(30, GFP_ATOMIC
);
3253 memset(&iwe
, 0, sizeof(iwe
));
3254 iwe
.cmd
= IWEVCUSTOM
;
3255 sprintf(buf
, "tsf=%016llx", (unsigned long long)(bss
->timestamp
));
3256 iwe
.u
.data
.length
= strlen(buf
);
3257 current_ev
= iwe_stream_add_point(current_ev
, end_buf
,
3267 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
)
3269 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3270 char *current_ev
= buf
;
3271 char *end_buf
= buf
+ len
;
3272 struct ieee80211_sta_bss
*bss
;
3274 spin_lock_bh(&local
->sta_bss_lock
);
3275 list_for_each_entry(bss
, &local
->sta_bss_list
, list
) {
3276 if (buf
+ len
- current_ev
<= IW_EV_ADDR_LEN
) {
3277 spin_unlock_bh(&local
->sta_bss_lock
);
3280 current_ev
= ieee80211_sta_scan_result(dev
, bss
, current_ev
,
3283 spin_unlock_bh(&local
->sta_bss_lock
);
3284 return current_ev
- buf
;
3288 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
)
3290 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3291 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3292 kfree(ifsta
->extra_ie
);
3294 ifsta
->extra_ie
= NULL
;
3295 ifsta
->extra_ie_len
= 0;
3298 ifsta
->extra_ie
= kmalloc(len
, GFP_KERNEL
);
3299 if (!ifsta
->extra_ie
) {
3300 ifsta
->extra_ie_len
= 0;
3303 memcpy(ifsta
->extra_ie
, ie
, len
);
3304 ifsta
->extra_ie_len
= len
;
3309 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
3310 struct sk_buff
*skb
, u8
*bssid
,
3313 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
3314 struct sta_info
*sta
;
3315 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3316 DECLARE_MAC_BUF(mac
);
3318 /* TODO: Could consider removing the least recently used entry and
3319 * allow new one to be added. */
3320 if (local
->num_sta
>= IEEE80211_IBSS_MAX_STA_ENTRIES
) {
3321 if (net_ratelimit()) {
3322 printk(KERN_DEBUG
"%s: No room for a new IBSS STA "
3323 "entry %s\n", dev
->name
, print_mac(mac
, addr
));
3328 printk(KERN_DEBUG
"%s: Adding new IBSS station %s (dev=%s)\n",
3329 wiphy_name(local
->hw
.wiphy
), print_mac(mac
, addr
), dev
->name
);
3331 sta
= sta_info_add(local
, dev
, addr
, GFP_ATOMIC
);
3335 sta
->supp_rates
= sdata
->u
.sta
.supp_rates_bits
;
3337 rate_control_rate_init(sta
, local
);
3339 return sta
; /* caller will call sta_info_put() */
3343 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
)
3345 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3346 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3348 printk(KERN_DEBUG
"%s: deauthenticate(reason=%d)\n",
3351 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
&&
3352 sdata
->type
!= IEEE80211_IF_TYPE_IBSS
)
3355 ieee80211_send_deauth(dev
, ifsta
, reason
);
3356 ieee80211_set_disassoc(dev
, ifsta
, 1);
3361 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
)
3363 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
3364 struct ieee80211_if_sta
*ifsta
= &sdata
->u
.sta
;
3366 printk(KERN_DEBUG
"%s: disassociate(reason=%d)\n",
3369 if (sdata
->type
!= IEEE80211_IF_TYPE_STA
)
3372 if (!(ifsta
->flags
& IEEE80211_STA_ASSOCIATED
))
3375 ieee80211_send_disassoc(dev
, ifsta
, reason
);
3376 ieee80211_set_disassoc(dev
, ifsta
, 0);